I18N/L18N:
    -
        - Format dates like
        - pref: dateformat
          default: us
          choices:
              us: mm/dd/yyyy
              metric: dd/mm/yyyy
              iso: yyyy/mm/dd
        - .
    -
        - pref: opaclanguagesdisplay
          default: 0
          choices:
              yes: Allow
              no: "Don't allow"
        - patrons to change the language they see on the OPAC.