English: The <code>heading_format</code> param from <code>[wcj_product_wholesale_price_table]</code> shortcode will replace this value as long it's different from the default.
Dutch: De <code>heading_format</code> param van <code>[wcj_product_wholesale_price_table]</code> shortcode vervangt deze waarde zolang deze verschilt van de standaardwaarde.