Toggle Help Menu: H
Toggle Play Mode: P
Teleport Player: Ctrl LClick
Move Camera: Shift Ctrl LDrag
Zoom Camera: Shift Ctrl Scroll
Undo Action: Ctrl Z

Toggle Menus: M
Switch Mode (Build/Edit): E
Toggle God Mode: G
Focus Camera: Shift Ctrl RClick
Reset Zoom: Shift Ctrl MClick
Redo Action: Shift Ctrl Z or Ctrl Y

Place Block: LClick
Multi-Place: Shift LDrag
Delete Block: RClick
Change Build Size: Scroll
Double/Halve Size: Shift Scroll
Select From Level: MClick

Select Blocks: LDrag
Multi-Select: Shift LDrag
Cycle Select: LClick
Delete Selected: Backspace
Move Selected: RDrag
Scale Selected: Scroll
Double/Halve Scale: Shift Scroll
Cut Selected: Ctrl X
Copy Selected: Ctrl C
Paste Copied: Ctrl V