age- List pages from the most recently created to the oldest.
mtime- List pages with the most recently modified first.
title- Order by title (page name).
meta(title)- Order according to the
[[!meta title="foo" sortas="bar"]]or
[[!meta title="foo"]]directive, or the page name if no full title was set.
meta(updated), etc. also work.
In addition, you can combine several sort orders and/or reverse the order of
sorting, with a string like
age -title (which would sort by age, then by
title in reverse order if two pages have the same age).