[amibroker] What should the result of this AFL be?

[Conrad Joach]

I have a database with 5000 minute bars in it. I open a chart set to 15 minute 
interval.

I place the following AFL on the chart:

fvb = Status("firstvisiblebar");
lvb = Status("lastvisiblebar");


_TRACE(NumToStr(fvb));
_TRACE(NumToStr(lvb));

How many times should this pair of values be printed? 5000/15? Or 5000?