WordPress at a glance
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_244' );
function filter_function_name_244( $string ){
	// filter...

	return $string;
}
$string
-

Where the hook is called

In file: /templates/checkout/form-shipping.php
woocommerce_enable_order_notes_field
woocommerce/templates/checkout/form-shipping.php 53
<?php if ( apply_filters( 'woocommerce_enable_order_notes_field', 'yes' === get_option( 'woocommerce_enable_order_comments', 'yes' ) ) ) : ?>
woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php 469
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 506
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.