Hi

Some bug in my opinion (program working fine but it's other things bug:

About sweep I wont create that element on the picture but as you can see he didn't look like he should:
http://www.new.vel.pl/bug1.jpg -I think it's not ok

About chamfer I create simple chamfer but chamfer edge like that it's not ok (I think chamfer here work like filet as you can see, he tesselate edges like use filet. I show good chamfer done in other program):
http://www.new.vel.pl/bug2.jpg

About extrud some times I use tool like that and it's good when there is not only cap ends but cap strat and cap end thay should be on when we trun on extrude like now is on cap ends.

One more I think in option add point can be secoud option (hide like in other options example filet) delete point (or maybe I can't found that option)

Sorry for my english

regards