MDL-22997 adding help strings

enrol/manual/lang/en/enrol_manual.php

@@ -33,9 +33,10 @@
 $string['manual:unenrol'] = 'Unenrol users from the course';
 $string['manual:unenrolself'] = 'Unenrol self from the course';
 $string['pluginname'] = 'Manual enrolments';
-$string['pluginname_desc'] = 'Internal enrolments is a basic enrolment plugin which allows simple user enrolments. It should be kept enabled in most cases. Some other plugins such as self enrolment may use this pugin internally.';
+$string['pluginname_desc'] = 'The manual enrolments plugin allows users to be enrolled manually via a link in the course administration settings, by a user with appropriate permissions such as a teacher. The plugin should normally be enabled, since certain other enrolment plugins, such as self enrolment, require it.';
 $string['status'] = 'Enable manual enrolments';
 $string['status_desc'] = 'Allow course access of internally enrolled users. This should be kept enabled in most cases.';
+$string['status_help'] = 'This setting determines whether users can be enrolled manually, via a link in the course administration settings, by a user with appropriate permissions such as a teacher.';
 $string['statusenabled'] = 'Enabled';
 $string['statusdisabled'] = 'Disabled';
-$string['unenrolselfconfirm'] = 'Do you really want to unenrol yourself from course "{$a}"?';
+$string['unenrolselfconfirm'] = 'Do you really want to unenrol yourself from course "{$a}"?';

lang/en/group.php

@@ -57,6 +57,7 @@
 $string['editgroupingsettings'] = 'Edit grouping settings';
 $string['editgroupsettings'] = 'Edit group settings';
 $string['enrolmentkey'] = 'Enrolment key';
+$string['enrolmentkey_help'] = 'An enrolment key enables access to the course to be restricted to only those who know the key. If a group enrolment key is specified, then not only will entering that key let the user into the course, but it will also automatically make them a member of this group.';
 $string['erroraddremoveuser'] = 'Error adding/removing user {$a} to group';
 $string['erroreditgroup'] = 'Error creating/updating group {$a}';
 $string['erroreditgrouping'] = 'Error creating/updating grouping {$a}';