REALIZE_WIDGET
     Creates a DECwindows window for the specified widget.
  Syntax
     REALIZE_WIDGET (widget)
  Parameters
     widget               The widget instance you want DECTPU to realize.
  Comments
     You can realize a widget only once during the widget's lifetime.  If
     the specified widget is a composite widget, REALIZE_WIDGET recursively
     realizes all the widget's managed children.
     REALIZE_WIDGET interacts with the widget's mappedWhenManaged resource
     to determine if the widget should also be mapped to the display.
  Related Topics
     CREATE_WIDGET   DELETE   MANAGE_WIDGET     MAP
     SET(MAPPED_WHEN_MANAGED) UNMANAGE_WIDGET   UNMAP