Yes those are weights, in sign as well as in house. The values can be set in options - settings - extra , on the right Points.
Tip, if you do Help and click Search, you can enter a search term, for instance 'elements', it will search all occasions. The help needs some work though, there are lots of dead links.
Myself i'm not very familiar with astrology history, i am mainly into modern western astro, my favorite writer is Liz Greene, but Ed, who codes most of the classical sections, knows a lot about it.
ps, there are some many modules that have their own weight system.