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

  Illegal exit from DEF* (ERR=245)

  A multi-line DEF* contains a branch to an END, SUBEND  or  FUNCTIONEND
  statement.   Change the program logic so that the program executes the
  multi-line DEF's FNEND statement before executing the END,  SUBEND  or
  FUNCTIONEND  statement.   This  error  cannot  be trapped with a BASIC
  error handler.