<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <VBI_data_descriptor>
      <!-- One per VBI data service -->
      <service data_service_id="uint8, required">
        <!-- One per field in the service -->
        <field field_parity="bool, default=false" line_offset="uint5, default=0"/>
        <!-- Valid only when data_service_id is not any of 1, 2, 4, 5, 6, 7 -->
        <reserved>
          Hexadecimal content
        </reserved>
      </service>
    </VBI_data_descriptor>

  </_descriptors>
</tsduck>
