Linear Features
Linear features in CTDB can contain trees, tree-lines, fences, concertina wires, wire road blocks, minefield fences and dragons teeth.
Trees are stored in the generated transmittal as a <Point Feature>.
All other CTDB linear features are stored as a <Linear Feature>.
Additional information about the linear feature, such as foliage height, are stored in <Property Value> objects with the SEDRIS feature.