[J3] [EXTERNAL] Re: SYSTEM_CLOCK

[Clune, Thomas L. (GSFC-6101)]

    > The biggest issue I see is that SYSTEM_CLOCK can be called with just a single argument but it takes two or more calls to do something useful.

    I don't agree with that characterization.  The vast majority of calls to system_clock have only one argument - the COUNT argument. 

I think Steve was referring to the fact that you need a start tick and a stop tick to do anything useful - 2 distinct calls.    Perhaps 1 argument in each, but still 2 calls.