VMS Help PASCAL, Predeclared Routines, Misc, SYSCLOCK  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 The SYSCLOCK function returns an integer value for the number  of
 milliseconds  of  system  time  used  by the current process.  On
 OpenVMS systems, the result is the same as that returned  by  the
 CLOCK function.

 Syntax:

    SYSCLOCK