coxhyp.gp: replaced by  pavage_hyper.gp
pavage_hyper.gp: use in slib hyptiling
deploiement.gp: use in slib polynet
grapheuler.gp: use in slib eulerian_graph to draw an eulerian graph
spanning_tree.gp: use in slib polynet
phase.gp: see in slib/analysis/phase.gp
circlepack.gp: circle packing
