Select Project at the top of the BlockM Interface.
Select Line.
Select node1 in the BlockM Computation window.
Click the red node of line I.
Then, a line will be highlighted in the graphics viewport. Click the corresponding edge in the graphics viewport.
Click
.Select node1 again.
Click the red node of line J.
Then, click the corresponding edge in the graphics viewport.
Click
.Select node1.
Click the red node of line K.
Click the corresponding edge.
Click
.Select node2, node3, node4 respectively. Do edges projection reference to the above steps.

