Add extra parameter to Interop subtitles seen in the wild.

diff --git a/xsd/DCSubtitle.v1.mattsson.xsd b/xsd/DCSubtitle.v1.mattsson.xsd
index acdfcd8471c96838106363de69395ba251b8a00d..77f2b436856d10d31660cbbe37f4d892ab4d1f16 100644 (file)
--- a/xsd/DCSubtitle.v1.mattsson.xsd
+++ b/xsd/DCSubtitle.v1.mattsson.xsd
@@ -117,6 +117,7 @@
       <xs:attribute name="HPosition" type="positionType"/>
       <xs:attribute name="VAlign" type="vAlignType" />
       <xs:attribute name="VPosition" type="positionType"/>
+      <xs:attribute name="ZPosition" type="positionType"/>
     </xs:complexType>
   </xs:element>
   <xs:element name="Ruby">