/sys$common/syshlp/helplib.hlb FORTRAN, Error Messages, Compilation Errors, SUBEXPVAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SEVERITY:  E

  MESSAGE TEXT:  Subscript or substring expression value out of
  bounds

  EXPLANATION:  A reference was made to either an array element
  beyond the specified dimensions or a character substring outside
  the specified bounds.