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filter is not described

woocommerce_enable_order_notes_field filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_enable_order_notes_field', 'filter_function_name_7725' );
function filter_function_name_7725( $string ){
	// filter...

	return $string;
}
$string
-

Where the hook is called

WC_Meta_Box_Order_Data::output()
woocommerce_enable_order_notes_field
woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php 476
if ( apply_filters( 'woocommerce_enable_order_notes_field', 'yes' == get_option( 'woocommerce_enable_order_comments', 'yes' ) ) && $post->post_excerpt ) {
woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php 513
if ( apply_filters( 'woocommerce_enable_order_notes_field', 'yes' == get_option( 'woocommerce_enable_order_comments', 'yes' ) ) ) :
woocommerce/templates/checkout/form-shipping.php 53
<?php if ( apply_filters( 'woocommerce_enable_order_notes_field', 'yes' === get_option( 'woocommerce_enable_order_comments', 'yes' ) ) ) : ?>

Where in WP core the hook is used WooCommerce

Usage not found.