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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 |
---|---|
1010 | * |
1011 | * This filter is currently only used on the Widgets screen to enable |
1012 | * accessibility mode. |
1013 | * |
1014 | * @since 3.0.0 |
1015 | * |
1016 | * @param string $screen_settings Screen settings. |
1017 | * @param WP_Screen $this WP_Screen object. |
1018 | */ |
1019 | $this->_screen_settings = apply_filters( 'screen_settings', $this->_screen_settings, $this ); |
1020 |
|
1021 | if ( $this->_screen_settings || $this->_options ) { |
1022 | $show_screen = true; |
1023 | } |
1024 |
|
1025 | /** |
1026 | * Filters whether to show the Screen Options tab. |
1027 | * |
1028 | * @since 3.2.0 |