woocommerce_before_single_variation action-hook . WC 1.0
Hook: woocommerce_before_single_variation.
Usage
add_action( 'woocommerce_before_single_variation', 'action_function_name_9979' );
function action_function_name_9979(){
// action...
}Where the hook is called
woocommerce_before_single_variation
woocommerce/templates/single-product/add-to-cart/variable.php 61
do_action( 'woocommerce_before_single_variation' );