1This utility constructs meshes indicating structure of local hex modification 2operations developed by Tautges. 3 4Usage: hexmodops [-h5m] [-vtk] {-ap | -foc | -fs | -cp | -tcp | -thp} 5 6-h5m: Output results to h5m file 7-vtk: Output results to vtk file 8 9-ap: Atomic pillow operation 10-foc: Face open-collapse operation 11-fs: Face shrink operation 12-cp: Chord push operation 13-tcp: Triple chord-push operation 14-thp: Triple hex-push operation 15