Shape and Mask Commands

Keyboard shortcut
Function
Press Shift and drag in the Canvas.
Draw a shape proportionally with the Rectangle, Circle Shape, and Mask tools.
Press Option and drag in the Canvas.
Draw a shape from its center with the Rectangle, Circle Shape, and Mask tools.
Press Shift-Option and drag in the Canvas.
Draw a shape proportionally from its center with the Rectangle, Circle Shape, and Mask tools.
EscapeEscape
Cancel spline drawing and delete the open spline.
ReturnReturn
Exit spline drawing mode and complete the existing spline drawing.
Double-click a path.
Add a point to path.
Press Option and click a path.
Add a point to path.
Press Command and click a Bezier point.
Convert a point to linear.
Press Command and drag a Bezier point.
Create tangents on point.
Press Command and drag a tangent handle.
Scale tangents proportionally.
Press Command and drag a B-Spline point.
Adjust a B-Spline point bias.
Press Command and click a B-Spline point.
Switch a B-Spline point bias.
Press Option and drag a tangent handle.
Break or relink a tangent handle.
Press Shift and drag a tangent handle.
Constrain a tangent to 45 degrees and original value.