Cutter Tool
Reference
Mode:
Draw Mode
Tool:
Toolbar ‣ Cutter
The Cutter tool delete points in between intersecting strokes.
Tool Settings
Flat Caps
Mark newly created End Caps as Flat.
Threshold
Determine the threshold for stroke intersections.
Usage
Draw a dotted line around the strokes you want to be cut. After releasing the mouse button all the points on the selected strokes will be deleted until another intersecting stroke is found.