XyzPilot uses Preview Undo in the toolbar to remove geometry. Undo handles dependency order automatically — dependent geometry is removed before the geometry it depends on.
XyzPilot uses an Undo system rather than explicit entity deletion. Geometry is removed by undoing the operations that created it. The Undo system handles dependencies automatically.
If an arc was created from L0 and L1, undoing back to L1 will first undo the arc, then undo L1 — the dependency relationship is resolved automatically.