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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 |
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577 | } |
578 |
|
579 | /** |
580 | * Fires once the Customizer theme preview has started. |
581 | * |
582 | * @since 3.4.0 |
583 | * |
584 | * @param WP_Customize_Manager $this WP_Customize_Manager instance. |
585 | */ |
586 | do_action( 'start_previewing_theme', $this ); |
587 | } |
588 |
|
589 | /** |
590 | * Stop previewing the selected theme. |
591 | * |
592 | * Removes filters to change the current theme. |
593 | * |
594 | * @since 3.4.0 |
595 | */ |