import drawtree; treeLevelStep = 2cm; TreeNode root = makeNode( "Root" ); TreeNode child1 = makeNode( root, "Child\_1" ); TreeNode child2 = makeNode( root, "Child\_2" ); TreeNode gchild1 = makeNode( child1, "Grandchild\_1" ); TreeNode gchild2 = makeNode( child1, "Grandchild\_2" ); TreeNode gchild3 = makeNode( child1, "Grandchild\_3" ); TreeNode gchild4 = makeNode( child1, "Grandchild\_4" ); TreeNode gchild11 = makeNode( child2, "Grandchild\_1" ); TreeNode gchild22 = makeNode( child2, "Grandchild\_2" ); TreeNode ggchild1 = makeNode( gchild1, "Great Grandchild\_1" ); draw( root, (0,0) );