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

  ERROR - A %IF directive contains a  lexical  expression  that  is  not
  immediately  followed  by  a  %THEN.   Supply  a %THEN clause.  %THEN,
  %ELSE, and %END %IF are required in a %IF directive.