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								<?xml version="1.0" encoding="iso-8859-1"?>  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								<?xml-stylesheet type="text/css" href="../styles.css" ?>  
						 
					
						
							
								
									
										
										
										
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								< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
							 
						 
					
						
							
								
									
										
										
										
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								< html  xmlns = "http://www.w3.org/1999/xhtml"  lang = "en"  xml:lang = "en" >  
						 
					
						
							
								
									
										
										
										
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									< head > 
							 
						 
					
						
							
								
									
										
										
										
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									< meta  http-equiv = "content-type"  content = "text/html; charset=iso-8859-1"  / > 
							 
						 
					
						
							
								
									
										
										
										
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										< title > Logtalk Grammar< / title > 
							 
						 
					
						
							
								
									
										
										
										
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										< link  rel = "stylesheet"  href = "../styles.css"  type = "text/css"  / > 
							 
						 
					
						
							
								
									
										
										
										
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									< / head > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< body >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< div  class = "navtop" >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< a  href = "../index.html" > contents< / a >  >  < a  href = "index.html" > reference manual< / a >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< h2 > Grammar< / h2 >  
						 
					
						
							
								
									
										
										
										
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								< p >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								The Logtalk grammar is here described using Backus-Naur Form syntax. Non-terminal symbols in < i > italics< / i >  have the defintion found in the ISO Prolog Standard. Terminal symbols are represented in a < code > fixed width font< / code >  and between "".
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / p >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Compilation units< a  name = "compilation_units" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > entity ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > category |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > protocol< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Object definition< a  name = "object_definition" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > object ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > begin_object_directive [object_directives] [clauses] end_object_directive.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > begin_object_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > :- object(< / code > " object_identifier [ "< code > ,< / code > " object_relations] "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > end_object_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > :- end_object.< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > object_relations ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > prototype_relations |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > non_prototype_relations< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > prototype_relations ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > prototype_relation |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > prototype_relation "< code > ,< / code > " prototype_relations< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > prototype_relation ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > implements_protocols |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > imports_categories |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > extends_objects< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > non_prototype_relations ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > non_prototype_relation |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > non_prototype_relation "< code > ,< / code > " non_prototype_relations< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > non_prototype_relation ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > implements_protocols |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > imports_categories |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > instantiates_classes |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > specializes_classes< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Category definition< a  name = "category_definition" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > category ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > begin_category_directive [category_directives] [clauses] end_category_directive.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > begin_category_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > :- category(< / code > " category_identifier [ "< code > ,< / code > " implements_protocols] "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > end_category_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > :- end_category.< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Protocol definition< a  name = "protocol_definition" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > protocol ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > begin_protocol_directive [protocol_directives] end_protocol_directive.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > begin_protocol_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > :- protocol(< / code > " protocol_identifier [ "< code > ,< / code > " extends_protocols] "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > end_protocol_directive ::=< / dt > 
							 
						 
					
						
							
								
									
										
										
										
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											< dd > "< code > :- end_protocol.< / code > "< / dd > 
							 
						 
					
						
							
								
									
										
										
										
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									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Entity relations< a  name = "entity_relations" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > implements_protocols ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > implements(< / code > " implemented_protocols "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > extends_protocols ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > extends(< / code > " extended_protocols "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > imports_categories ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > imports(< / code > " imported_categories "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > extends_objects ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > extends(< / code > " extended_objects "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > instantiates_classes ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > instantiates(< / code > " instantiated_objects "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > specializes_classes ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > specializes(< / code > " specialized_objects "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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									< h4 > Implemented protocols< a  name = "implemented_protocols" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
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									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > implemented_protocols ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > implemented_protocol |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > implemented_protocol_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > implemented_protocol_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > implemented_protocol ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
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												< dd > scope "< code > ::< / code > " protocol_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
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										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > implemented_protocol_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > implemented_protocol |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > implemented_protocol "< code > ,< / code > " implemented_protocol_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > implemented_protocol_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " implemented_protocol_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Extended protocols< a  name = "extended_protocols" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_protocols ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_protocol |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_protocol_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_protocol_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_protocol ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
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												< dd > scope "< code > ::< / code > " protocol_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
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										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_protocol_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_protocol |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_protocol "< code > ,< / code > " extended_protocol_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_protocol_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " extended_protocol_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Imported categories< a  name = "imported_categories" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > imported_categories ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > imported_category |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > imported_category_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > imported_category_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > imported_category ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-12-05 23:57:48 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
												< dd > scope "< code > ::< / code > " category_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > imported_category_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > imported_category |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > imported_category "< code > ,< / code > " imported_category_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > imported_category_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " imported_category_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Extended objects< a  name = "extended_objects" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_objects ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_object_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_object_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_object ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-12-05 23:57:48 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
												< dd > scope "< code > ::< / code > " object_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_object_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > extended_object "< code > ,< / code > " extended_object_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > extended_object_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " extended_object_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Instantiated objects< a  name = "instantiated_objects" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > instantiated_objects ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > instantiated_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > instantiated_object_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > instantiated_object_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > instantiated_object ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-12-05 23:57:48 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
												< dd > scope "< code > ::< / code > " object_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > instantiated_object_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > instantiated_object< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > instantiated_object "< code > ,< / code > " instantiated_object_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > instantiated_object_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " instantiated_object_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Specialized objects< a  name = "specialized_objects" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > specialized_objects ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > specialized_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > specialized_object_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > specialized_object_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > specialized_object ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-12-05 23:57:48 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
												< dd > scope "< code > ::< / code > " object_identifier< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > specialized_object_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > specialized_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > specialized_object "< code > ,< / code > " specialized_object_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > specialized_object_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " specialized_object_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Entity scope< a  name = "scope" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
									
										
										
										
											2001-12-05 23:57:48 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
											< dt > scope ::=< / dt > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
												< dd > "< code > public< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > protected< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > private< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								< h3 > Entity identifiers< a  name = "entity_identifiers" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > entity_identifiers ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > entity_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > entity_identifier_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > entity_identifier_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > entity_identifier ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > protocol_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > category_identifier< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > entity_identifier_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > entity_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > entity_identifier "< code > ,< / code > " entity_identifier_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > entity_identifier_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > [< / code > " entity_identifier_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Object identifiers< a  name = "object_identifiers" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_identifiers ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_identifier ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > compound< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_identifier_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_identifier "< code > ,< / code > " object_identifier_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_identifier_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " object_identifier_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Category identifiers< a  name = "category_identifiers" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_identifiers ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_identifier ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_identifier_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_identifier "< code > ,< / code > " category_identifier_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_identifier_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " category_identifier_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Protocol identifiers< a  name = "protocol_identifiers" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_identifiers ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_identifier ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_identifier_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_identifier "< code > ,< / code > " protocol_identifier_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_identifier_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " protocol_identifier_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								< h3 > Directives< a  name = "directives" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Object directives< a  name = "object_directives" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_directives ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > object_directive object_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > object_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- initialization(< / code > " < i > callable< / i >  "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- uses(< / code > " object_identifiers "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- calls(< / code > " protocol_identifiers "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- dynamic.< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- info(< / code > " info_list "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Category directives< a  name = "category_directives" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_directives ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > category_directive category_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > category_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- initialization(< / code > " < i > callable< / i >  "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- uses(< / code > " object_identifiers "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- calls(< / code > " protocol_identifiers "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- dynamic.< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- info(< / code > " info_list "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Protocol directives< a  name = "protocol_directives" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_directives ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > protocol_directive protocol_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > protocol_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- initialization(< / code > " < i > callable< / i >  "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- dynamic.< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- info(< / code > " info_list "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
									< h4 > Predicate directives< a  name = "predicate_directives" > < / a > < / h4 > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_directives ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_directive predicate_directives< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > scope_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > mode_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > metapredicate_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > info_directive |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > operator_directive< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > dynamic_directive< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > discontiguous_directive< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > scope_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- public(< / code > " predicate_indicator_term "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- protected(< / code > " predicate_indicator_term "< code > ).< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- private(< / code > " predicate_indicator_term "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > mode_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- mode(< / code > " predicate_mode_term "< code > ,< / code > " number_of_solutions "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > metapredicate_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- metapredicate(< / code > " metapredicate_mode_indicator "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > info_directive ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > :- info(< / code > " predicate_indicator "< code > ,< / code > " info_list "< code > ).< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_indicator_term ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > predicate_indicator< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_indicator_sequence |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > predicate_indicator_list< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_indicator_sequence ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > predicate_indicator< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > predicate_indicator< / i >  "< code > ,< / code > " predicate_indicator_sequence< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_indicator_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " predicate_indicator_sequence "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > predicate_mode_term ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i >  "< code > (< / code > " mode_terms "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > mode_terms ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > mode_term |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > mode_term "< code > ,< / code > " mode_terms< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > mode_term ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > @< / code > " [type] | "< code > +< / code > " [type] | "< code > -< / code > " [type] | "< code > ?< / code > " [type]< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > metapredicate_mode_indicator ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i >  "< code > (< / code > " metapredicate_terms "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > metapredicate_terms ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > metapredicate_term |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > metapredicate_term "< code > ,< / code > " metapredicate_terms< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > metapredicate_term ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > ::< / code > " | "< code > *< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > type ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > prolog_type | logtalk_type | user_defined_type< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > prolog_type ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > term< / code > " | "< code > nonvar< / code > " | "< code > var< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > compound< / code > " | "< code > ground< / code > " | "< code > callable< / code > " | "< code > list< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > atomic< / code > " | "< code > atom< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > number< / code > " | "< code > integer< / code > " | "< code > float< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > logtalk_type ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > object< / code > " | "< code > category< / code > " | "< code > protocol< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > event< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > user_defined_type ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > compound< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > number_of_solutions ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > zero< / code > " | "< code > zero_or_one< / code > " | "< code > zero_or_more< / code > " | "< code > one< / code > " | "< code > one_or_more< / code > " | "< code > error< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > info_list ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > []< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > "< code > [< / code > " info_item "< code > is< / code > " < i > nonvar< / i >  "< code > |< / code > " info_list "< code > ]< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dt > info_item ::=< / dt > 
							 
						 
					
						
							
								
									
										
										
										
											2003-02-05 00:15:28 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
												< dd > "< code > comment< / code > " | "< code > author< / code > " | "< code > version< / code > " | "< code > date< / code > " | "< code > parnames< / code > " |< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
												< dd > "< code > argnames< / code > " | "< code > definition< / code > " | "< code > redefinition< / code > " | "< code > allocation< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												< dd > < i > atom< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								< h3 > Clauses and goals< a  name = "clauses" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > goal ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > < i > callable< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > message_call |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > external_call |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > message_call ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > message_to_object |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > message_to_self |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > message_to_super< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > message_to_object ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > receivers "< code > ::< / code > " messages< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > message_to_self ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > ::< / code > " messages< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > message_to_super ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > ^^< / code > " message< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > messages ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > message |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > (< / code > " message "< code > ,< / code > " messages "< code > )< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > (< / code > " message "< code > ;< / code > " messages "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > message ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > < i > callable< / i >  |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > < i > variable< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > receivers ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > receiver |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > (< / code > " receiver "< code > ,< / code > " receivers "< code > )< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > (< / code > " receiver "< code > ;< / code > " receivers "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > receiver ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > object_identifier |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > < i > variable< / i > < / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > external_call ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > {< / code > " < i > callable< / i >  "< code > }< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > Entity properties< a  name = "entity_properties" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
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								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > category_property ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > static< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > dynamic< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > built_in< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > object_property ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > static< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > dynamic< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > built_in< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > protocol_property ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > static< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > dynamic< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > built_in< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2003-12-30 13:33:51 +00:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								< h3 > Predicate properties< a  name = "predicate_properties" > < / a > < / h3 >  
						 
					
						
							
								
									
										
										
										
											2001-06-06 19:40:57 +00:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										< dt > predicate_property ::=< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > static< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > dynamic< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > private< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > protected< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > public< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > built_in< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > declared_in(< / code > " entity_identifier "< code > )< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > defined_in(< / code > " object_identifier | category_identifier "< code > )< / code > " |< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											< dd > "< code > metapredicate(< / code > " metapredicate_mode_indicator "< code > )< / code > "< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / blockquote >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
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								< div  class = "navbottom" >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< a  href = "index.html" > previous< / a >  | < a  href = "../glossary.html" > glossary< / a >  | < a  href = "index.html" > next< / a >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
									
										
										
										
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								< div  class = "copyright" >  
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								Copyright ©  < a  href = "mailto:pmoura@logtalk.org" > Paulo Moura< / a >  —  < a  href = "http://www.logtalk.org" > Logtalk.org< / a > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								< / div >  
						 
					
						
							
								
									
										
										
										
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								< / html >