Anchors

The following classes exist in the Anchors module for anchor and skeletone handling:

Anchor(point, direction, label)	Represents a single anchor point with attributes such as coordinates, orientation/direction, and label.
MultiAnchor([multipoint])	Represents a collection of multiple anchor points.
Skeletone(lines)	Represents a collection of connected lines for routing and wireframe geometry.
Layer(name, polygons, color, enable_grid_snap)