P5: Guidelines for Electronic Text Encoding and Interchange

<rng:define name="data.probability">
 <rng:data type="double">
  <rng:param name="minInclusive">0</rng:param>
  <rng:param name="maxInclusive">1</rng:param>
 </rng:data>
</rng:define>

data.probability = xsd:double { minInclusive = "0" maxInclusive = "1" }