Ah those. Hmm lillte experimets I left in game. There is also filter mode. try hitting different f - keys.
The dos ticker code i used was like 10 times a second that were too slow so I needed to code a little: deep-Timer is the default that slows the fps game down if it runs too fast and likewise. Ticker is that lazy 10 times a seconf frame 2 flood is just 2 loops that wait in loop until next frame is drawn.