i18n:
    class: sfI18N
    param:
      source:               XLIFF
      debug:                off
      untranslated_prefix:  "[T]"
      untranslated_suffix:  "[/T]"
      cache:
        class: sfFileCache
        param:
          automatic_cleaning_factor: 0
          cache_dir:                 %SF_I18N_CACHE_DIR%
          lifetime:                  31556926
          prefix:                    %SF_APP_DIR%/i18n