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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 |
|---|---|
| 714 | * Filters the legacy contextual help list. |
| 715 | * |
| 716 | * @since 2.7.0 |
| 717 | * @deprecated 3.3.0 Use get_current_screen()->add_help_tab() or |
| 718 | * get_current_screen()->remove_help_tab() instead. |
| 719 | * |
| 720 | * @param array $old_compat_help Old contextual help. |
| 721 | * @param WP_Screen $this Current WP_Screen instance. |
| 722 | */ |
| 723 | self::$_old_compat_help = apply_filters( 'contextual_help_list', self::$_old_compat_help, $this ); |
| 724 | |
| 725 | $old_help = isset( self::$_old_compat_help[ $this->id ] ) ? self::$_old_compat_help[ $this->id ] : ''; |
| 726 | |
| 727 | /** |
| 728 | * Filters the legacy contextual help text. |
| 729 | * |
| 730 | * @since 2.7.0 |
| 731 | * @deprecated 3.3.0 Use get_current_screen()->add_help_tab() or |
| 732 | * get_current_screen()->remove_help_tab() instead. |