<rng:element name="variantEncoding">
<rng:ref name="att.global.attributes"/>
<rng:attribute name="method">
<rng:choice>
<rng:value>location-referenced</rng:value>
<rng:value>double-end-point</rng:value>
<rng:value>parallel-segmentation</rng:value>
</rng:choice>
</rng:attribute>
<rng:attribute name="location">
<rng:choice>
<rng:value>internal</rng:value>
<rng:value>external</rng:value>
</rng:choice>
</rng:attribute>
<rng:empty/>
</rng:element>
element variantEncoding
{
att.global.attributes,
attribute method
{
"location-referenced" | "double-end-point" | "parallel-segmentation"
},
attribute location { "internal" | "external" },
empty
}