Add a point to a path

Double-click the path

Add a point to a path

Option-click the path

Convert a point to linear

Command-click the point

Create a tangent on a control point

Command-drag the point

Scale a tangent proportionally

Command-drag the tangent handle

Adjust a B-Spline point bias

Command-drag a B-Spline point

Switch a B-Spline point bias

Command-click a B-Spline point

Break or relink a tangent handle

Option-drag a tangent handle

Constrain a tangent to 45 degrees and original value

Shift-drag a tangent handle