411 REFERENCE · Wikibooks
GtkRadiant/Edge Editing
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Vertex Editing The Clipper
Select any brush and press E or click 22px to switch to edge editing mode. A dot will appear on every edge of the brush, which you may then select and drag around to modify the brush, just press ESC when done. You can select multiple dots at once.