The )PROPS system command lists the Properties of the object associated with the current space.

For example:

      ⎕CS 'BB' ⎕WC 'BrowseBox' 
 
      )PROPS
BrowseFor       Caption ChildList       Data    Event
EventList       HasEdit KeepOnClose     MethodList
PropList        StartIn Target  Translate       Type

)PROPS produces no output when executed in a pure (non GUI) namespace, for example:

      ⎕CS 'X' ⎕NS ''
      )PROPS