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

  ERROR - The program is compiled with the /TYPE=EXPLICIT  qualifier  in
  effect  and  the program references a variable, constant, function, or
  subprogram name that is not explicitly declared.   Explicitly  declare
  the variable, constant, function, or subprogram.