2D Window/s - View Commands
Action Description Key
Grid Down Decreases the size of the grid. [
Grid Up Increases the size of the grid. ]
Next View Cycles a 2d view through XY (top) XZ (front) & YZ (side.) B
Set Grid
(1 unit to 64 units)
Sets the grid to the following units, keys 1 to 8 as follows :-
1 - 1 unit, 2 - 2 units, 3 - 4 units,
4 -  8 units, 5 - 16 units, 6 - 32 units,
7 - 64 units & key 0 sets grid off
keys 1 to 7
Key 0 - grid off
Zoom In Zooms 2d camera in Delete
Zoom Out Zooms 2d camera out Insert
Z Zoom In Zooms 2d checker window in CTRL+Delete
Z Zoom Out Zooms 2d checker window out CTRL+Insert
Z Toggle Toggles the 2d checker view on/off CTRL+SHIFT+Z
Toggle Cubic Clip Turns clipping view on or off CTRL+\
Toggle Show Patches Hides patch meshes CTRL+SHIFT+P
Toggle Realtime unknown command CTRL+R
Toggle Size Paint unknown command Q

Information Commands
Action Description Key
Entity Info (Doesn't seem to work - use the Edit Menu) L
Map Info Brush / Entity info in current map (Doesn't seem to work - use the Edit Menu) M
Show All Textures Seems to only show all shaders and currently used textures. CTRL+A
Show Detail Toggles Detail on/off CTRL+D
View Entity Info Brings up the entity Dialog Box N
Previous Leak Spot Takes POV in the 3d window to the last leak spot if a leak file is loaded. CTRL+SHIFT+L
Surface Inspector Brings up surface properties menu. Useless in q3radiant except to adjust texture sizes S
Dump Selected Brush Displays detailed   information in Console View SHIFT+D
3D Window - View Commands
Action Description Key
Camera Angle Down Look down. Z
Camera Angle Up Look up. A
Camera Back Move  backwards Down
Camera Foward Move forwards Up
Camera Left Look left Left
Camera Right Look right Right
Camera Strafe Left Strafe Left Comma
Camera Strafe Right Strafe Right Period
Camera Up Move Up D
Camera Down Move Down C
Center View Centers the 3d window END
Down a Floor Moves the POV down to the next floor level PAGE DOWN
Up a Floor Moves the POV up to the next floor level PAGE UP
Cubic Clip Zoom Out Makes the cubic clipping plane move further out CTRL+[
Cubic Clip Zoom In Makes the cubic clipping plane move further in (speed optimisation) CTRL+}
Toggle Cubic Clip Turns clipping view on or off CTRL+\
Toggle Show Patches Hides patch meshes CTRL+SHIFT+P
Toggle Realtime unknown command CTRL+R
Toggle Size Paint unknown command Q
Interface Commands
Action Description Key
Exit Closes the editor CTRL+X
File Open Opens a file CTRL+O
Preferences Brings up the Preference window P
Toggle Camera Toggles 3d window on/off CTRL+SHIFT+C
Toggle Console Only used in 4 way and free window modes - opens Console window O
Toggle View Toggles between window views CTRL+SHIFT+V
View Textures Only used in 4 way and free window modes - opens Texture window T
Undo   CTRL+Z

Select / Move / Copy / Paste
Action Description Key
Move selection Down Moves the selected object down by units equal to grid size PLUS
Move selection Up Moves the selected object up  by units equal to grid size SUBTRACT
Mouse Rotate Toggles Free Rotation mode. Control rotation by holding left mouse down and moving the mouse up and down. R
Select Item Selects item at current mouse cursor position - toggles. SHIFT+MOUSE
LEFT CLICK
Delete Selection Deletes current selected items. BACKSPACE
Clone Selection Clones current selection SPACEBAR
Copy / Paste / Undo Standard windows Copy / Paste & Undo commands CTRL+C
CTRL+P
CTRL+Z
Select Nudge Left / Right / Up / Down Moves current selection Left Right Up or Down ALT+Arrow keys
Select all of Type Selects identical entites of current selected type SHIFT+A
Unselect Selection Deselects all currently selected objects ESC