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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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563 | /** |
564 | * Filters Twenty Seventeen custom colors CSS. |
565 | * |
566 | * @since Twenty Seventeen 1.0 |
567 | * |
568 | * @param string $css Base theme colors CSS. |
569 | * @param int $hue The user's selected color hue. |
570 | * @param string $saturation Filtered theme color saturation level. |
571 | */ |
572 | return apply_filters( 'twentyseventeen_custom_colors_css', $css, $hue, $saturation ); |
573 | } |
574 |
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