P.S. I've since found that none of the calls exist as system or
fortran intrinsics or functions: i.e. IFSD, ITFD, ITD, IFD, RMPAR, RN,
OURTIME, IPR, EXEC, R, REIO - at least they're not listed in the HP
Fortran reference or the MPE V System Intrinsics manual. Arrrrrrgh