<item name="PositiveX"><bit>0</bit></item>
<item name="PositiveY"><bit>1</bit></item>
<item name="NegativeX"><bit>2</bit></item>
<item name="PositiveX"><bit>0</bit></item>
<item name="PositiveY"><bit>1</bit></item>
<item name="NegativeX"><bit>2</bit></item>
<field type="CARD16" name="y1" />
<field type="CARD16" name="x2" />
<field type="CARD16" name="y2" />
<field type="CARD16" name="y1" />
<field type="CARD16" name="x2" />
<field type="CARD16" name="y2" />
<pad bytes="2" />
<field type="CARD16" name="num_devices" />
<list type="CARD16" name="devices"><fieldref>num_devices</fieldref></list>
<pad bytes="2" />
<field type="CARD16" name="num_devices" />
<list type="CARD16" name="devices"><fieldref>num_devices</fieldref></list>