XmInternAtom - A function that returns an atom for a given name
#include <Xm/Xm.h>
#include <Xm/AtomMgr.h>
Atom XmInternAtom (display, name, only_if_exists)
      Display  * display;
      String   name;
      Boolean  only_if_exists;
XmInternAtom returns an atom for a given name. It mirrors the Xlib interfaces for atom management, but provides client-side caching. When and where caching is provided in Xlib, the routines will become pseudonyms for the Xlib routines.
Returns an atom.