General
Ctrl-Z: Undo
Ctrl-Y: Redo
A: Select all
Shift-A: Deselect all
Shift-Click: Select all faces in body
Shift-Click: Select a chain of edges
Shift-hover: Display halo over edges/vertices
Shift-hover: Display crosshair over faces
R, G, B: Crosshair select red, green, or both
Shift-drag: Drag perpendicular
Delete: Delete objects
Backspace: Delete objects
X: Fix objects
Shift-X: Unfix objects
Ctrl-C: Copy selected body
Ctrl-C: Copy selected edge
Ctrl-S: Save as Phi file
Ctrl-F: Search for a command
Esc: Close modals, deselect, abort
Viewing
Ctrl-drag: Pan
Arrows: Rotate 15°
F: View all (Fit)
Shift-F: View all and rotate to an oblique view
Q: Hide vertices
W: Hide edges
R: Hide faces
Shift-R: Hide selected faces instead of deselected ones
Main commands
P: Pop-out
V: Add vertex
Shift-V: Add vertex at middle of edge. Multiple Shift-clicks subdivide more
E: Add edge
Shift-E: Add straight edge
C: Carve
Shift-C: Straight line carve
V during carve: Add vertices
D: Quick scale body
Shift-D: Scale
S: Split patch
O: Offset face
T: Make edges tangent
L: Make edge linear
Shift-L: Make edges collinear
J: Snap a body to another
Shift-J: Snap bodies deforming the first one
N: Snap to Reference body
Y: Add to Symmetry Set
Rigid move tool
M: Show or hide manipulator
Shift-move: Move tool without affecting object
Shift-scale: Proportional scale
G: Switch to global positioning
L: Switch to local positioning
Sketch editing
V: Flip vertical
H: Flip horizontal
X: Move along X (amount depends on zoom)
Y: Move along Y (amount depends on zoom)
Z: Move along Z (amount depends on zoom)
Shift-X: Move along -X (amount depends on zoom)
Shift-Y: Move along -Y (amount depends on zoom)
Shift-Z: Move along -Z (amount depends on zoom)
Up/down arrows: Scale proportionately
1, Shift-1: Scale horizontally
2, Shift-2: Scale vertically
R: Remove sketch
Reference body editing
V: Flip vertical
H: Flip horizontal
X: Move along X (amount depends on zoom)
Y: Move along Y (amount depends on zoom)
Z: Move along Z (amount depends on zoom)
Shift-X: Move along -X (amount depends on zoom)
Shift-Y: Move along -Y (amount depends on zoom)
Shift-Z: Move along -Z (amount depends on zoom)
Up/down arrows: Scale proportionately
1, Shift-1: Scale along X
2, Shift-2: Scale along Y
3, Shift-3: Scale along Z
Delete: Remove body