CHECKBOX
This command adds a checkbox control.  Checkboxes have two states, set and reset. They are useful for getting input of on/off  type information.

print #handle.ext, "set" - Places a checkmark in checkbox.

print #handle.ext, "reset" - This clears the checkbox.

print #handle.ext, "value? result$" - The result$ variable is set to the status of the checkbox (either "set" or "reset").

print #handle.ext, "setfocus" - Checkbox has input focus.

print #handle, "font facename pointSize" - sets font used.

print #handle.ext, "enable" - Control is enabled.

print #handle.ext, "disable" - Control is inactive and grayed-out.