GGU-ELASTIC: "Delete" menu item
This menu item allows you to delete selected system triangles. You must first click four points in anti-clockwise direction. All triangles with their centroid within this quadrilateral will be deleted.
When this menu item is selected, the mesh is displayed without node labelling. If you have deleted the entire mesh, you will also no longer see the nodes. Simply click "FEM mesh/FEM mesh" and the nodes will be displayed.