Term unification:"=|<unify_with_occurs_check>|\\\\=":::Subroutine1::\n\
Term comparison:"@=\\<|==|\\\\==|@\\>=|@\\<|@\\>":::Subroutine1::\n\
Term creation and decomposition:"<(functor|arg|copy_term)>|=\\.\\.":::Subroutine1::\n\
Mode operators:"\\?|@":::Subroutine1::\n\
Stream selection and control:"<(current_input|current_output|set_input|set_output|open|close|flush_output|stream_property|at_end_of_stream|set_stream_position)>":::Subroutine1::\n\
Character input-output:"<(get_char|get_code|peek_char|peek_code|put_char|put_code|nl)>":::Subroutine1::\n\
Term input-output:"<(read_term|read|write_canonical|write_term|writeq|write|current_op|op|current_char_conversion|char_conversion)>":::Subroutine1::\n\
Logic and control:"\\\\\\+|<(once|repeat)>":::Subroutine::\n\
Atomic term processing:"<(atom_length|atom_concat|sub_atom|atom_chars|atom_codes|char_code|number_chars|number_codes)>":::Subroutine1::\n\
Implementation defined hooks:"<(set_prolog_flag|current_prolog_flag)>":::Subroutine1::\n\