+* `feedshow` - Specify the maximum number of matching pages to include in
+ the rss/atom feeds. The default is the same as the `show` value above,
+ and it cannot be larger than that value, but can be set to a smaller
+ value to avoid producing excessively large feed files.
+* `skip` - Specify a number of pages to skip displaying. Can be useful
+ to produce a feed that only shows archived pages.