+The following pref variables were changed in 2.0:
+
+- \language_package was renamed to \language_custom_package
+
+- \language_use_babel (bool) has been replaced by
+ \language_package_selection, which can be
+ 0 (automatic selection)
+ 1 (always use babel)
+ 2 custom (use the custom package defined by
+ \language_custom_package)
+ 3 none (equivalent to former \language_use_babel false)
+
+The following pref variables are obsoleted in 2.0: