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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 | 
|---|---|
| 36 |  * | 
| 37 |  * @since MU | 
| 38 |  */ | 
| 39 | function do_activate_header() { | 
| 40 |     /** | 
| 41 |      * Fires before the Site Activation page is loaded, but on the wp_head action. | 
| 42 |      * | 
| 43 |      * @since 3.0.0 | 
| 44 |      */ | 
| 45 |     do_action( 'activate_wp_head' ); | 
| 46 | } | 
| 47 | add_action( 'wp_head', 'do_activate_header' ); | 
| 48 |  | 
| 49 | /** | 
| 50 |  * Loads styles specific to this page. | 
| 51 |  * | 
| 52 |  * @since MU | 
| 53 |  */ | 
| 54 | function wpmu_activate_stylesheet() { |