Step 5
nWe are going to make 3 copies of this wall now. To do it in an easy way just hold down the shift key and then move the object to your left or right along the axis.
nNow give each wall one of the following names lod0.wall lod1.wall lod2.wall and col (do not put a .wall on that one)
nTo rename anything just select it and click on the words that appear over the modifier list menu to be able to change the names of objects.