-- Command: check ID/K, COMMAND/K, PORT/K, HELP/K, NODE/K, ICON/K,
          SPEC/K, PICT/K, TRANS/S, ATTRS/K/M, LABEL=LABELS/K/F
     Check gadget objects are created with this command.  Text, button,
     switch, check, and image gadgets are essentially identical with
     the only differences being the base object class and the default
     appearance/action (check objects, by default, use MUI images
     specified through the SPEC option and toggle their state).  All
     options are identical for these objects.  Refer to the text
     command for descriptions of the options.