P5: TEIガイドライン

<rng:element name="form">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.lexicographic.attributes"/>
<rng:optional>
 <rng:attribute name="type">
  <rng:choice>
   <rng:value>simple</rng:value>
   <rng:value>lemma</rng:value>
   <rng:value>variant</rng:value>
   <rng:value>compound</rng:value>
   <rng:value>derivative</rng:value>
   <rng:value>inflected</rng:value>
   <rng:value>phrase</rng:value>
   <rng:data type="Name"/>
  </rng:choice>
 </rng:attribute>
</rng:optional>
<rng:zeroOrMore>
 <rng:choice>
  <rng:text/>
  <rng:ref name="model.gLike"/>
  <rng:ref name="model.phrase"/>
  <rng:ref name="model.inter"/>
  <rng:ref name="model.formPart"/>
  <rng:ref name="model.global"/>
 </rng:choice>
</rng:zeroOrMore>
</rng:element>

element form
{
   att.global.attributes,
   att.lexicographic.attributes,
   attribute type
   {
      "simple"
    | "lemma"
    | "variant"
    | "compound"
    | "derivative"
    | "inflected"
    | "phrase"
    | xsd:Name
   }?,
   (
      text
    | model.gLike
    | model.phrase
    | model.inter
    | model.formPart
    | model.global
   )*
}