-2 or smaller for less than default.
< -1000 to hide the format (if there is
another one which is strictly better)
- * language_preference Is this in the correct requested
- language?
+ * language Language code, e.g. "de" or "en-US".
+ * language_preference Is this in the language mentioned in
+ the URL?
10 if it's what the URL is about,
-1 for default (don't know),
-10 otherwise, other values reserved for now.