Smart default [cc.smartdefault] example j5GFC - a smart default form prints first the required fields and the optional with value (in layout order) and then the optional without value (in layout order)
Smart default [cc.smartdefault] example with CSS, bNd3zNNg84 - a smart default form prints first the required fields and the optional with value (in layout order) and then the optional without value (in layout order)