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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 |
---|---|
1053 |
|
1054 | $hidden = get_user_option( "metaboxhidden_{$screen->id}" ); |
1055 |
|
1056 | // Hide slug boxes by default |
1057 | if ( !is_array( $hidden ) ) { |
1058 | if ( 'post' == $screen->base || 'page' == $screen->base ) |
1059 | $hidden = array('slugdiv', 'trackbacksdiv', 'postcustom', 'postexcerpt', 'commentstatusdiv', 'commentsdiv', 'authordiv', 'revisionsdiv'); |
1060 | else |
1061 | $hidden = array( 'slugdiv' ); |
1062 | $hidden = apply_filters('default_hidden_meta_boxes', $hidden, $screen); |
1063 | } |
1064 |
|
1065 | return $hidden; |
1066 | } |
1067 |
|
1068 | /** |
1069 | * Add a new section to a settings page. |
1070 | * |
1071 | * Part of the Settings API. Use this to define new settings sections for an admin page. |