Virtual pages?

Ruby Apps Radiant CMS
1

For what is the virtual attribute on a page used?

I’d seen it, but hadn’t thought about it until now.

2

Virtual pages potentially respond to more than one URL. The
quintessential cases are the FileNotFoundPage (when a page is not found,
i.e. 404) and the ArchiveXXXPage (for dynamic year, month, day
archives). They usually require a parent page to define when they will
be used instead of a regular page.

Sean