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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 |
---|---|
597 | } |
598 |
|
599 | /** |
600 | * Fires once the Customizer theme preview has started. |
601 | * |
602 | * @since 3.4.0 |
603 | * |
604 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
605 | */ |
606 | do_action( 'start_previewing_theme', $this ); |
607 | } |
608 |
|
609 | /** |
610 | * Stop previewing the selected theme. |
611 | * |
612 | * Removes filters to change the current theme. |
613 | * |
614 | * @since 3.4.0 |
615 | */ |