Variable history length

[Aksej]

I'd like to make geographic history longer or shorter. Where can I change the necessary values?

Is it the cycle_count argument in generate_plates_simulation?

Also: There's a comment in plates.py, saying:
# Note: To rescale the worlds heightmap to roughly Earths scale, multiply by 2000.
Multiply what by 2000? How would I change the code to do that?

Last question: Do tectonics and erosion run "in parallel" or is there first plate tectonics and then erosion of the final result?