This function zeros the passed event counter. Event counters are used with the i/o rate tags as described in the Interface Manual.
int32 counter );
Counter number (1-200)
Counters 35 - 50 are reserved for OSI internal use. The I/O Rate counter functions only function on platforms for which an I/O Rates program is provided.
This function has no effect on Windows 3.1 or Win32 environments.