VMS Help FORTRAN, Error Messages, Compilation Errors, ZERLENSTR  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SEVERITY:  E

  MESSAGE TEXT:  Zero-length string

  EXPLANATION:  The length specified for a character, Hollerith,
  hexadecimal, octal, or Radix-50 constant must not be zero.