Game Development Reference
6. You'll noice that when you selected the edge in the 2D view, it actually selected two
edges in the 3D view—in my case, the top and botom. This is really handy and what
you want most of the ime. But you can also make a ramp shape by selecing only
one of the edges in the 3D view and then moving it.
7. Ediing verices is also prety powerful. Switch back to Vertex mode.