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

  INFORMATION - A %IDENT compiler directive contains a  string  that  is
  invalid  for  PDP-11  systems.  This error is issued only when the BP2
  compatibility flagger is enabled.   Change  the  %IDENT  string.   The
  string  must  be between one and six characters, and must contain only
  RAD-50 characters.