1 a) e.g. "2" for 2 point circle. I saw no sub-commands in Alias menu.

1 b) IF you can make an alias for a sub-command, e.g. 2 point circle, then how do you alter auto-suggestion list order, or does it "learn" your common tools like AutoCAD.

2) Is there a way to use mouse to select sub command instead of keyboard?