( Homepage example: Generation of two crossing tunnels in a brick. Then reinforce the tunnels with a grid of beams) echo -no number_of_space_dimensions 3 materi_velocity materi_velocity_integrated beam_rotation end_initia geometry_line 1 -1. 0. 0.5 1. 0. 0.5 0.3 geometry_line 2 0. -1. 0.5 0. 1. 0.5 0.3 geometry_set 1 -geometry_line 1 -geometry_line 2 control_mesh_macro 10 -brick 1 5 10 10 control_mesh_macro_parameters 10 0. 0. 0.5 1. 1. 1. control_mesh_split 20 -yes control_mesh_delete_geometry 30 -geometry_line 1 control_mesh_delete_geometry 40 -geometry_line 2 control_mesh_generate_beam 50 2 -geometry_set 1 end_data