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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 |
---|---|
687 | } |
688 |
|
689 | /** |
690 | * Fires once the Customizer theme preview has started. |
691 | * |
692 | * @since 3.4.0 |
693 | * |
694 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
695 | */ |
696 | do_action( 'start_previewing_theme', $this ); |
697 | } |
698 |
|
699 | /** |
700 | * Stop previewing the selected theme. |
701 | * |
702 | * Removes filters to change the current theme. |
703 | * |
704 | * @since 3.4.0 |
705 | */ |