parameters, and if it will handle this CGI request, output a page and
terminate the program.
+## savestate
+
+ IkiWiki::hook(type => "savestate", id => "foo", call => \&savestate);
+
+This hook is called wheneven ikiwiki normally saves its state, just before
+the state is saved. The function can save other state, modify values before
+they're saved, etc.
+
# Wiki configuration
A plugin can access the wiki's configuration via the `%IkiWiki::config`