2016

Select item at back or behind
+Option+Shift+click where items overlap
Select multiple items or points
Shift+click
Deselect all items
Escape
Constrain to square or circle while creating a box
Press Shift while creating
Constrain proportions while resizing
Shift+drag handle
Scale contents while resizing item
+drag handle
Resize relative to center
Option+drag handle
Resize multiple items (requires multiple selection)
Press  before dragging handle
Constrain item rotation to 0°/45°/90°
Press Shift while rotating
Constrain straight line angle to 0°/45°/90°
Shift+while creating or resizing line
Duplicate item while dragging
Option+drag
Increase
Preset range
+Shift+. (period)
1 point
+Option+Shift+. (period)
Decrease
Preset range
+Shift+, (comma)
1 point
+Option+Shift+, (comma)
é
Add Bézier point
Click segment with Bézier Pen tool
Delete Bézier point
Click point with Bézier Pen tool
Invoke Select Point mode from Bézier Pen tool

Invoke Convert Point mode from Bézier Pen tool
Option
Invoke Convert Point mode while dragging Bézier handle
Option+drag
Retract Bézier handle
Option+click control handle
Delete active Bézier point
Delete (Select Point tool must be selected)
Select all points on Bézier item or path
Double click point with Select Point tool
Invoke Item mode from Bézier Pen tool
+Option
Constrain active point to 45° movement
Shift+drag point
Constrain active curve handle to 45° movement
Shift+drag curve handle
Convert Bézier line to filled-center Bézier box
Option+ Item > Shape > [Bézier shape]