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

  SEVERITY:  F

  MESSAGE TEXT:  Variable name, constant, or expression invalid in
  this context

  EXPLANATION:  An entity was used incorrectly; for example, the name
  of a subprogram was used where an arithmetic expression was
  required.