$mla_language_option_definitions
$mla_language_option_definitions :
$mla_language_option_definitions defines the language-specific database options and admin page areas for setting/updating them
The array must be populated at runtime in MLA_WPML::mla_localize_language_option_definitions(), because localization calls cannot be placed in the "public static" array definition itself.
Each option is defined by an array with the elements documented in class-mla-options.php