<entry id="a003" 
  term="matrix1"
  dataType="float"
  rows="3"
  columns="4"
  unitType="unit:length"
  minInclusive="0.0"
  maxInclusive="100.0"
  recommendedUnits="unit:m"
  totalDigits="8"
  fractionDigits="3">
    <definition>A matrix of lengths</definition>
    <description>A data instance will have a matrix which points
  to this entry (e.g. dictRef="foo:matrix1"). The matrix must
  be 3*4, composed of floats in 8.3 format, of type length,
  values between 0 and 100 and with recommended units metres.
    </description>
</entry>