Useful implementations include fences, lattices, roofs, and walls.[1][10] Some of the outcomes of pleaching can be considered an early form of what is known today as tree shaping.[citation needed] In an early, labor-intensive, practical use of pleaching in medieval Europe, trees were installed in the ground in parallel hedgerow lines or quincunx patterns, then shaped by trimming to form a flat-plane grid above ground level. When the trees' branches in this grid met those of neighboring trees, they were grafted together. Once the network of joints were of substantial size, builders laid planks across the grid, upon which they built huts to live in, thus keeping the human settlement safe in times of annual flooding.[3] Wooden dancing platforms were also built and the living tree branch grid bore the weight of the platform and dancers.[3]