Load main profile:   - make sure that when capture is selected, it started right away     (needed for testing)   - make sure it's the last thing saved, so things are set up     when it's loaded   - add a few keywords:      - cycle = <n> cycle through the main loop n times      - save_png = <f> save the png as file <f>

Now, you can (manually) add things like:
[Capture_Configuration]
cycle = 500
capture_started = 1
cycle = 50
save_png = foo.png

and it saves the foo.png file.