Here two pictures of the results of a graph command in ConnectedText for the topic "Outliner." The first is two levels deep, the second three:
Should I say that clicking on any of the nodes takes you to that topic? (Not in these pictures, of course.)
1. It's created by an expression like this: "[[$GRAPH:(($CURRENTTOPIC))|Height=500|Width=1000|Levels=2]]". It resides in the footer of every page (note) I create.