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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1771 | <?php |
| 1772 | $contextual_help = ''; |
| 1773 | if ( isset($_wp_contextual_help[$screen->id]) ) { |
| 1774 | $contextual_help .= '<div class="metabox-prefs">' . $_wp_contextual_help[$screen->id] . "</div>\n"; |
| 1775 | } else { |
| 1776 | $contextual_help .= '<div class="metabox-prefs">'; |
| 1777 | $default_help = __('<a href="http://codex.wordpress.org/" target="_blank">Documentation</a>'); |
| 1778 | $default_help .= '<br />'; |
| 1779 | $default_help .= __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>'); |
| 1780 | $contextual_help .= apply_filters('default_contextual_help', $default_help); |
| 1781 | $contextual_help .= "</div>\n"; |
| 1782 | } |
| 1783 | |
| 1784 | echo apply_filters('contextual_help', $contextual_help, $screen->id, $screen); |
| 1785 | ?> |
| 1786 | </div> |
| 1787 | |
| 1788 | <div id="screen-meta-links"> |
| 1789 | <div id="contextual-help-link-wrap" class="hide-if-no-js screen-meta-toggle"> |