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

  ERROR  -  A  SET  /SYNTAX_CHECK   command   was   entered   when   the
  /ANSI_STANDARD  qualifier  was  in  effect.   Syntax  checking  is not
  supported in ANSI mode.