Milliseconds Resolution

[Jose Lerebours]

On 09/06/2016 11:34 AM, Richard Kreiss via Filepro-list wrote:
> In reading through this thread, if Stanley wants to do time math using milliseconds, then won't doing a system call to an outside program, running that program, and then returning to filePro's processing, be incorrect by the time in milliseconds that it took to execute the exit, run the program and then return?
and that my friend is the $64 question.  I figure he wants to do math 
between two points in time, set values in two variables and get the 
difference down to the M/S ... of course, this was not disclosed by 
Stanley so only he can clarify that.