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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 |
|---|---|
| 3509 | <div><?php wp_nonce_field( 'screen-options-nonce', 'screenoptionnonce', false ); ?></div> |
| 3510 | </form> |
| 3511 | </div> |
| 3512 | |
| 3513 | <?php |
| 3514 | endif; |
| 3515 | |
| 3516 | global $title; |
| 3517 | |
| 3518 | $_wp_contextual_help = apply_filters('contextual_help_list', $_wp_contextual_help, $screen); |
| 3519 | ?> |
| 3520 | <div id="contextual-help-wrap" class="hidden"> |
| 3521 | <?php |
| 3522 | $contextual_help = ''; |
| 3523 | if ( isset($_wp_contextual_help[$screen]) ) { |
| 3524 | if ( !empty($title) ) |
| 3525 | $contextual_help .= '<h5>' . sprintf(__('Get help with “%s”'), $title) . '</h5>'; |
| 3526 | else |
| 3527 | $contextual_help .= '<h5>' . __('Get help with this page') . '</h5>'; |