In figure 1.1 there is a list in which you can see which tool is intended for which notational technique. If you want to do something different: TCM contains a generic diagram editor, a generic table editor and a generic tree editor. In these editors almost no constraints are built-in so it is easy to (ab)use them. The specific tools offer some other specific graphical features, though, but the constraints can be a hindrance if they are not applicable to your diagram technique. But restrictions invigorate creativity.