Do clipping

What does the “DO CLIPPING” do? (I believe that’s for the mirror mode)

It prevents vertices from going past the mirror axis. It joins the vertices at the center line.

Is that good and easy while modeling?

usually, yes. It can cause vertices to stick to the center, which can be annoying. but mostly, it is both useful and necessary.

Okies thanks very much for the tip! :wink: