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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 |
|---|---|
| 38 | } |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Fires early before the Widgets administration screen loads, |
| 43 | * after scripts are enqueued. |
| 44 | * |
| 45 | * @since 2.2.0 |
| 46 | */ |
| 47 | do_action( 'sidebar_admin_setup' ); |
| 48 | |
| 49 | $title = __( 'Widgets' ); |
| 50 | $parent_file = 'themes.php'; |
| 51 | |
| 52 | get_current_screen()->add_help_tab( |
| 53 | array( |
| 54 | 'id' => 'overview', |
| 55 | 'title' => __( 'Overview' ), |
| 56 | 'content' => |