[tei-council] content model for <attDef>

[Sebastian Rahtz]

we currently say that an attribute looks like this:

<content>
    <group xmlns="http://relaxng.org/ns/structure/1.0">
      <zeroOrMore>
        <ref name="model.glossLike"/>
      </zeroOrMore>
      <optional>
        <ref name="datatype"/>
      </optional>
      <zeroOrMore>
        <ref name="constraintSpec"/>
      </zeroOrMore>
      <optional>
        <ref name="defaultVal"/>
      </optional>
      <optional>
        <choice>
          <ref name="valList"/>
          <oneOrMore>
            <ref name="valDesc"/>
          </oneOrMore>
        </choice>
      </optional>
      <zeroOrMore>
        <ref name="exemplum"/>
      </zeroOrMore>
      <zeroOrMore>
        <ref name="remarks"/>
      </zeroOrMore>
    </group>
  </content>

which means that it can end up with no datatype of valList at all.

What do folks think of adding a constraint that, unless its in @mode='change', you must
either supply a closed valList or a datatype?

Sebastian