There should be a way to add metadata to a page. Probably a plugin could do this, for example:
[[!meta foo="bar"]]
Uses for this include:
- Setting a page title that's not tied to the filename.
- Any metadata that's generally useful on html pages.
- Maybe as an alternate way to tag a page, like linking to the tag, except it doesn't have to show up in the page text.
- Recording page licenses.