/sys$common/syshlp/helplib.hlb CC, Run-time functions, pause  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Suspends the calling process until delivery of a signal whose
  action is either to execute a signal-catching function or to
  terminate the process.

  Syntax:

       #include <unistd.h>

       int pause(void)