I find these navigational aids really useful Not only do they help you get where you want to go with excessive typing but they also make the opedia visually more interesting It is far more enjoyable reading articles with graphics pictures and charts like these  As for them being intimidating to some users Maybe I considered doing a jpeg images but that still introduces HTML codes and they have the additional disadvantage that others cannot modify them  ie put their own links in the charts The compromise I cam up with was to put all the code in one block People will see that it is a module and they can ignore that section if they dont want to get into codes