Library /sys$common/syshlp/sca$menu.hlb sca__callres_view_delete_undef  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Choose this menu item from the Modify pull-down menu to delete nodes
  that correspond to routines that are not defined in your library.
  These routines include system routines and run-time library routines.