Insert

V vector
P pencil
T text
L line
R rect
O oval
U rounded

Show

^G grid
^L layout
^P pixels
^H selection handles
^R rulers
⌘⌥1 toggle left (layers)
⌘⌥2 toggle right (inspector)
⌘⌥3 toggle both
⌘. presentation

Zoom

⌘0 100%
⌘1 fit to screen
⌘2 fit selection to screen
⌘3 center selection

Arrange

⌘⌥ up/dn forward or backward
^⌘⌥ up/dn front or back

Distribute

^⌘H horizontal
^⌘V vertical

Layers

⌘R rename
⌘F find
⌘G group
⌘⇧G ungroup

Font

⌘⌥ +/- bigger/smaller
⌘⇧[ left align
⌘⇧\ center align
⌘⇧] right align