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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 | */ |