Liferay even generates its own sitemap (for google use), and of
course there is a list of all pages, and various different ways of
organizing them in navigation.
Some pages are virtual though: They're "display pages" for
individual content and automatically generated whenever they're
requested - typically through a link to them. Those pages might best
be found when crawling the site, indeed - but typically the content
will also be part of other pages, so that it's questionable if you
want to generate them as well (they typically won't appear in
automatically generated navigation, but you might use them manually).
So, the answer is: Yes, it exists. And the way you'd present it
depends on the way you'd like it to be presented.
