You can also use the Break option to remove tangents from vertices by clicking the vertex while in Break mode. When you remove a tangent, the curve defined by the tangent is removed.

The shape of the border line differs depending on whether adjacent vertices are broken:

• If adjacent vertices are unbroken, the border line curves as it approaches the vertices.
• If adjacent vertices are broken, the border line is straight as it approaches the vertices.

You can create a garbage mask composed entirely of straight edges by removing the tangents from all the vertices:

• To remove the tangent of a vertex, select Break and click the vertex.
• To add a tangent back to a vertex, select Auto and click the vertex. Alternatively, using the Break option, click the vertex and “drag” the tangent out again.