+### Translation
+
+- **language**: translation language (also see [Translations](Translations))
+ - **auto** (default): The translation language is chosen from the browser locale.
+ It means that the language can be different for 2 different visitors depending on their locale.
+ - **en**: Use the English translation.
+ - **fr**: Use the French translation.
+- **mode**:
+ - **auto** or **php** (default): Use the PHP implementation of gettext (slower)
+ - **gettext**: Use PHP builtin gettext extension
+ (faster, but requires `php-gettext` to be installed and to reload the web server on update)
+- **extension**: Translation extensions for custom themes or plugins.
+Must be an associative array: `translation domain => translation path`.
+