<option type="enum" id="opt/77">
  <arg_shortname>
    <en>Duplex</en>
  </arg_shortname>
  <arg_longname>
    <en>Double-Sided Printing</en>
  </arg_longname>
  <arg_execution>
    <arg_group>General</arg_group>
    <arg_order>200</arg_order>
    <arg_spot>A</arg_spot>
    <arg_substitution />
    <arg_proto> -dDuplex=%s</arg_proto>
  </arg_execution>
  <constraints>
    <constraint sense="true">
      <driver>cdj970</driver>
      <arg_defval>ev/628</arg_defval>
    </constraint>
  </constraints>
  <enum_vals>
    <enum_val id="ev/628">
      <ev_longname>
        <en>Off</en>
      </ev_longname>
      <ev_shortname>
        <en>None</en>
      </ev_shortname>
      <ev_driverval>0</ev_driverval>
    </enum_val>
    <enum_val id="ev/629">
      <ev_longname>
        <en>On (Flip on Long Edge)</en>
      </ev_longname>
      <ev_shortname>
        <en>DuplexNoTumble</en>
      </ev_shortname>
      <ev_driverval>2</ev_driverval>
      <constraints>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_840C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_841C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_842C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_845C</printer>
        </constraint>
      </constraints>
    </enum_val>
    <enum_val id="ev/630">
      <ev_longname>
        <en>On (Flip on Short Edge)</en>
      </ev_longname>
      <ev_shortname>
        <en>DuplexTumble</en>
      </ev_shortname>
      <ev_driverval>1</ev_driverval>
      <constraints>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_840C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_841C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_842C</printer>
        </constraint>
        <constraint sense="false">
          <printer>printer/HP-DeskJet_845C</printer>
        </constraint>
      </constraints>
    </enum_val>
  </enum_vals>
</option>