ClipChildrenNode

A node whose effective descendants are clipped to this node's measured bounds for painting and pointer hit testing.

The retained runtime reads this marker on the owning tree thread after this node's regular paint callback and before traversing its effective children. Nested clips intersect, empty bounds hide all descendant drawing, and this node's own regular and overlay commands remain outside the child clip. Pointer traversal skips the entire effective descendant subtree when the event position lies outside this node's half-open bounds, while this node's own input behavior remains governed by its bounds.