This is a minor complaint but there is one very annoying characteristic of the sentence diagramer. I'm working back through my diagrams aligning everything the way I want them and when I select a line and begin to move it, the line disappears and is replaced by this blue outline of the line and that makes it very difficult to see how to line it up with other things on the diagram.
It would be better if I could see the line itself when deciding precisely where it needs to be placed.