+=item C<flash_later $category, @messages>
+
+Stores messages for the given category for the next request. The
+category can be either C<information>, C<warning> or C<error>. C<info>
+can also be used as an alias for C<information>.
+
+The messages are stored in the user's session and restored upon the
+next request. Can be used for transmitting information over HTTP
+redirects.
+