-language is a "slave" one. A page written in the "master" language is
-a "master" page, and is written in any supported format but PO.
+language is a "slave" one.
+
+A page written in the "master" language is a "master" page, and is
+written in any supported format but PO. It does not have to be named
+a special way: migration from/to this plugin does not imply heavy
+renaming work.