Regarding the ZWO ASI driver.

Manual says "supports region of interest". Is this implemented by the "frame" settings in the control panel? No way to, say, select an area in a test photo as with the focusing module?

What is "rapid looping" in the control panel "options" settings? Is it related to the count/delay settings under the Ekos CCD tab?

So to take hundreds of exposures of a small object as economically as possible, one places it within the numerical coordinates entered in the frame settings (either in the driver control panel or Ekos CCD tab) and configures rapid looping in the control pattern or count/delay under the Ekos CCD tab?