Key	Action
RMB + Drag	Look around
WASD	Move (forward / left / back / right)
Q / E	Move up / down
Shift	Double speed
Scroll	Dolly forward / back
RMB + Scroll	Adjust move speed
F	Focus selected
Ctrl+1-9	Save camera bookmark
1-9	Restore camera bookmark

Key	Action
LMB	Select entity
Ctrl+Click	Toggle multi-select
Shift+LMB Drag	Box select

Key	Action
Esc	Translate mode
R	Rotate mode
T	Scale mode
X	Toggle local / world space
MMB	Toggle snap
Ctrl (during drag)	Toggle snap
Arrows	Nudge (grid-unit move)
Alt+Arrows	90 deg rotate
PageUp / PageDown	Nudge vertical

Key	Action
Delete / Backspace	Delete selected
Ctrl+D	Duplicate
Ctrl+C	Copy components
Ctrl+V	Paste components
H	Toggle visibility
Alt+G	Reset position
Alt+R	Reset rotation
Alt+S	Reset scale

Key	Action
1	Vertex mode
2	Edge mode
3	Face mode
4	Clip mode
X / Y / Z	Constrain axis
Shift+Click	Multi-select
Delete	Delete selected element
PageUp/PageDown	Nudge selected vertices/edges/faces up/down
Enter	Apply clip plane
Esc	Exit brush edit

Key	Action
B	Draw brush (add)
C	Draw brush (cut)
Tab	Toggle add / cut mode
Click	Place vertex / advance phase
Enter	Close polygon
Backspace	Remove last vertex
Esc / Right-click	Cancel drawing

Key	Action
Ctrl+Shift+W	Toggle wireframe
[	Decrease grid size
]	Increase grid size
Ctrl+Alt+Scroll	Change grid size

Key	Action
Ctrl+S	Save scene
Ctrl+O	Open scene
Ctrl+Shift+N	New scene
Ctrl+Z	Undo
Ctrl+Shift+Z	Redo