Sorry I took so long to reply. I don't often come to perlmonks.
As to the issue at hand, the reason that it isn't mentioned is that it isn't supported. In this way the pages are essentially like they are in a wiki; that is to say on one logical level. I can imagine adding such a facility for the navigation. Unfortunately, it would involve reworking the interals to allow nested paths and I don't think thats on the docket for some time (if ever).
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