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function custom_text_change_script() {
    if ( is_cart() ) { ?>
        <script type="text/javascript">
            // Replace the text inside <strong> tags in cart page
            jQuery(document).ready(function($) {
                $('.woocommerce-cart-form .product-name strong:contains("Inserisci la larghezza (m):")').each(function() {
                    $(this).text($(this).text().replace('Inserisci la larghezza (m):', 'Largezza:'));
                });
            });
        </script>
    <?php }
}
add_action('wp_head', 'custom_text_change_script');