User blog comment:PlasmoidThunder/New Activation Code Implementation/@comment-3495717-20140304154147/@comment-5054628-20140304223129

@Plasmoid: Yea, but not necessary to make an "proprety icon", the [ D ] mean enough that this move is only used when crouching. This is as also make "Ground Only" or "Ground Ok"

I know also that a Saki Tsuzura's special move uses [ U ] D.