I am creating diagrams using CmapTools (not strictly concept maps), and in one of these diagrams I would like to put overlapping nodes, like in the image below.
Some of them are over the green node, some are below. I saw one of them changing "layers", but I didn't pay attention and can't reproduce the procedure.
Is there any way to make the "4" node be drawn over the green node like the "3"?
If it can be achieved by file-editting, it's fine too.