XmMainWindowSep2 returns the widget ID of the second Separator in the
MainWindow. The second Separator is located between the
Command widget and the ScrolledWindow.
This Separator is visible only when XmNshowSeparator is True.
NOTE: XmMainWindowSep2 is obsolete and exists for compatibility
with previous releases. Use XtNameToWidget instead. Pass
a MainWindow variable as the first argument to XtNameToWidget
and pass Separator2 as the second argument.
For a complete definition of MainWindow and its associated resources, see
Specifies the MainWindow widget ID