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

  The ERN$ function returns the name of the main program or subprogram  that
  was executing when the last error occurred.

  Example

  2000   Error_module$ = ERN$

  Additional Information (explode) :

• Syntax