diff --git a/actions/emailsettings.php b/actions/emailsettings.php
index 6138a88f90..9c250fc8a9 100644
--- a/actions/emailsettings.php
+++ b/actions/emailsettings.php
@@ -131,7 +131,11 @@ class EmailsettingsAction extends AccountSettingsAction
                 // TRANS: Field label for e-mail address input in e-mail settings form.
                 $this->input('email', _('Email address'),
                              ($this->arg('email')) ? $this->arg('email') : null,
-                             // TRANS: Instructions for e-mail address input form.
+                             // TRANS: Instructions for e-mail address input form. Do not translate
+                             // TRANS: "example.org". It is one of the domain names reserved for
+                             // TRANS: use in examples by http://www.rfc-editor.org/rfc/rfc2606.txt.
+                             // TRANS: Any other domain may be owned by a legitimate person or
+                             // TRANS: organization.
                              _('Email address, like "UserName@example.org"'));
                 $this->elementEnd('li');
                 $this->elementEnd('ul');
diff --git a/actions/groupmembers.php b/actions/groupmembers.php
index 54f1d8dcda..038d1db68a 100644
--- a/actions/groupmembers.php
+++ b/actions/groupmembers.php
@@ -97,9 +97,13 @@ class GroupmembersAction extends GroupDesignAction
     function title()
     {
         if ($this->page == 1) {
+            // TRANS: Title of the page showing group members.
+            // TRANS: %s is the name of the group.
             return sprintf(_('%s group members'),
                            $this->group->nickname);
         } else {
+            // TRANS: Title of the page showing group members.
+            // TRANS: %1$s is the name of the group, %2$d is the page number of the members list.
             return sprintf(_('%1$s group members, page %2$d'),
                            $this->group->nickname,
                            $this->page);
@@ -389,7 +393,14 @@ class GroupBlockForm extends Form
 
     function formActions()
     {
-        $this->out->submit('submit', _('Block'), 'submit', null, _('Block this user'));
+        $this->out->submit(
+            'submit',
+            // TRANS: Button text for the form that will block a user from a group.
+            _m('BUTTON','Block'),
+            'submit',
+            null,
+            // TRANS: Submit button title.
+            _m('TOOLTIP',_('Block this user'));
     }
 }
 
@@ -516,6 +527,13 @@ class MakeAdminForm extends Form
 
     function formActions()
     {
-        $this->out->submit('submit', _('Make Admin'), 'submit', null, _('Make this user an admin'));
+        $this->out->submit(
+          'submit',
+          // TRANS: Button text for the form that will make a user administrator.
+          _m('BUTTON','Make Admin'),
+          'submit',
+          null,
+          // TRANS: Submit button title.
+          _m('TOOLTIP','Make this user an admin'));
     }
 }
diff --git a/lib/blockform.php b/lib/blockform.php
index b6652b1f69..54552b3e57 100644
--- a/lib/blockform.php
+++ b/lib/blockform.php
@@ -66,6 +66,7 @@ class BlockForm extends ProfileActionForm
 
     function title()
     {
+        // TRANS: Title for the form to block a user.
         return _('Block');
     }
 
@@ -77,6 +78,7 @@ class BlockForm extends ProfileActionForm
 
     function description()
     {
+        // TRANS: Description of the form to block a user.
         return _('Block this user');
     }
 }
diff --git a/lib/unblockform.php b/lib/unblockform.php
index 2a444f7cd0..b89d7ff78d 100644
--- a/lib/unblockform.php
+++ b/lib/unblockform.php
@@ -66,6 +66,7 @@ class UnblockForm extends ProfileActionForm
 
     function title()
     {
+        // TRANS: Title for the form to unblock a user.
         return _('Unblock');
     }
 
@@ -77,6 +78,7 @@ class UnblockForm extends ProfileActionForm
 
     function description()
     {
+        // TRANS: Description of the form to unblock a user.
         return _('Unblock this user');
     }
 }