Mouse Controls:
| Command | Button | Modifiers | Tool | Cursor on |
| Create Brush | left | 2D - nothing selected | ||
| Select | left | shift+alt | 2D/3D - any object | |
| Toggle Select (aka XOR) | left | shift | 2D/3D - any object | |
| Move selected objects | left | Translate | 2D/3D - manipulator | |
| Rotate selected objects | left | Rotate | 2D/3D - manipulator | |
| Scale selected objects | left | Scale | 2D/3D - manipulator | |
| Move selected objects | left | QE | 2D/3D - selected objects | |
| Resize selected objects | left | QE | 2D/3D - outside selected | |
| Place clipper point | left | Clipper | 2D | |
| Move clipper point | left | Clipper | 2D - Clipper point | |
| Select Texture | left | Texture Browser - thumbnail | ||
| Toggle free-move camera | right | 3D | ||
| Move 2D View | right | 2D | ||
| Zoom 2D View | right | shift | 2D | |
| Position 3D Camera in 2D view | middle | ctrl | 2D | |
| Angle 3D Camera in 2D view | middle | 2D | ||
| Copy face texture | middle | 3D - brush face | ||
| Paste face texture | middle | ctrl+shift | 3D - brush face |
Toolbar Buttons:
| Command | Button |
| Mirror Selection around X-Axis | |
| Rotate Selection 90 degrees around X-Axis | |
| Mirror Selection around Y-Axis | |
| Rotate Selection 90 degrees around Y-Axis | |
| Mirror Selection around Z-Axis | |
| Rotate Selection 90 degrees around Z-Axis | |
Keyboard Shortcuts:
| Command | Button | Modifiers | Tool |
| Open Map File | o | ctrl | |
| Save Map File | s | ctrl | |
| Toggle 2D view angle | tab | ctrl | |
| Deselect All | escape | ||
| Invert Selection | i | ||
| Delete Selection | backspace | ||
| Clone Selection | spacebar | ||
| Copy Selection | c | ctrl | |
| Paste Selection | v | ctrl | |
| Undo | z | ctrl | |
| Redo | y | ctrl | |
| Toggle Face Mode on/off | f | ||
| Toggle Edge Mode on/off | e | ||
| Toggle Vertex Mode on/off | v | ||
| Translate Tool | w | ||
| Rotate Tool | r | ||
| Scale Tool | |||
| Clipper Tool | x | ||
| QE Tool | q | ||
| Apply clipper plane to selection | enter | Clipper | |
| Apply clipper plane (keep both sides) | enter | shift | Clipper |
| Toggle Grid on/off | 0 | ||
| Set grid to 2^(N-1) eg. 2 = 2unit, 3 = 4unit, 4 = 8unit | 1-9 | ||
| Snap Selection to grid | g | ctrl | |
| Convert Selection to a new N-Sided brush | 1-9 | ctrl | |
| Move 3D Camera forward | uparrow | ||
| Move 3D Camera backward | downarrow | ||
| Rotate 3D Camera left | leftarrow | ||
| Rotate 3D Camera right | rightarrow | ||
| Move 3D Camera up | d | ||
| Move 3D Camera down | c | ||
| Rotate 3D Camera up | a | ||
| Rotate 3D Camera down | z | ||
| Move 3D Camera left | , | ||
| Move 3D Camera right | . | ||
| Merge Selected brushes | u | ctrl | |
| Subtract Selected brushes | u | shift | |
| Toggle Entity List | l | ||
| Toggle Entity Inspector | n | ||
| Toggle Surface Inspector | s | ||
| Toggle Patch Inspector | s | shift |