Ctrl-N : New map.
Ctrl-O : Load level.
Ctrl-L : Save level.
Ctrl-Z : Undo.
Ctrl-Y : Redo.
Ctrl-X : Cut.
Ctrl-C : Copy.
Ctrl-V : Paste.
Ctrl-W : Duplicate.
Delete : Delete selected actors, and delete vertex in 2D Shaper
Shift-N : Select none.
Shift-A : Select all actors, brushes, everything.
Shift-S : Select all surfaces.
Shift-G : Select textures matching groups.
Shift-I : Select textures matching Items
Shift-B : Select textures matching Brush
Shift-T : Select textures matching Texture
Shift-J : Select textures All Adjacents
Shift-C : Select textures Adjacent Coplanars
Shift-W : Select textures Adjacent Walls
Shift-F : Select textures Adjacent Floors/Ceilings
Shift-Q : Select textures Reverse
Shift-M : Select textures Memorize set
Shift-R : Select textures Recall Memory
Shift-O : Select textures Or with memory
Shift-U : Select textures And with memory
Shift-X : Select textures Xor with memory
F4 : Actor Properties
F5 : Surface Properties
F6 : Level Properties
Ctrl-A : Add brush to world
Ctrl-S : Subtract brush from world
Ctrl-N : Intersect Brush
Ctrl-D : DeIntersect Brush
Ctrl-P : Play-Test Level
F7 : Compiling ALL scripts, takes some time and is useless, don't overwrite them
F8 : Build Options
F9 : Take ScreenShot, it works even here in UED
B : Toggle Builder Brush
W : Toggle Static Meshes
O : Toggle Volumes and Anti-portals
K : Toggle BackDrop (skybox)
E : Toggle Event Lines
S : Toggle Selection Highlights on actors and surfaces
T : Toggle Terrain
F : Toggle Distance Fog
I : Toggle Info on all actors in map
P : Toggle Realtime Preview
Q : Toggle Real Brushes (not in wireframe of course)
H : Toggle Actors