Marks the path being built as a clip (W or W*); the painting call that ends the path then narrows the clipping path.
public void Clip(FillRule rule = FillRule.NonZero)
The rule that decides what is inside.
ISO 32000-2 §8.5.4, Table 60: the clip takes effect after the painting operator, so the path itself is painted unclipped. EndPath() narrows the clip without painting.