<div1>

<div1> (level-1 text division) contains a first-level subdivision of the front, body, or back of a text. [4.1.2 Numbered Divisions]
Module textstructure — Default Text Structure
Attributes
Member of
model.div1Like
Contained by
textstructure: back body front
May contain
analysis: interp interpGrp span spanGrp
certainty: certainty precision respons
cmc: post
core: bibl biblStruct cb cit desc divGen ellipsis gap gb head index l label lb lg list listBibl meeting milestone note noteGrp p pb q quote said sp stage
dictionaries: entry entryFree superEntry
drama: camera caption castList move sound spGrp tech view
figures: figure notatedMusic table
header: biblFull
iso-fs: fLib fs fvLib
linking: ab alt altGrp anchor join joinGrp link linkGrp timeline
msdescription: msDesc
namesdates: listEvent listNym listObject listOrg listPerson listPlace listRelation
nets: eTree forest graph listForest tree
spoken: annotationBlock incident kinesic pause shift u vocal writing
tagdocs: classSpec constraintSpec dataSpec eg egXML elementSpec macroSpec moduleSpec outputRendition schemaSpec specGrp specGrpRef
textcrit: app listApp listWit witDetail
textstructure: argument byline closer dateline div2 docAuthor docDate epigraph floatingText opener postscript salute signed trailer
transcr: addSpan damageSpan delSpan fw listTranspose metamark space substJoin
Note

any sequence of low-level structural elements, possibly grouped into lower subdivisions.
Example
<div1 xml:id="levi" n="I" type="part">
 <head>Part I: Of Man </head>
 <div2 xml:id="levi1" n="1" type="chapter">
  <head>Chap. I. Of Sense </head>
  <p>Concerning the Thoughts of man... </p>
 </div2>
</div1>
<div1 xml:id="levii" n="II" type="part">
 <head>Part II: Of Common-Wealth</head>
</div1>
Content model 
<content>
 <sequence>
  <alternate minOccurs="0"
   maxOccurs="unbounded">
   <classRef key="model.divTop"/>
   <classRef key="model.global"/>
  </alternate>
  <sequence minOccurs="0">
   <alternate>
    <sequence minOccurs="1"
     maxOccurs="unbounded">
     <alternate>
      <classRef key="model.div2Like"/>
      <classRef key="model.divGenLike"/>
     </alternate>
     <classRef key="model.global"
      minOccurs="0" maxOccurs="unbounded"/>
    </sequence>
    <sequence>
     <sequence minOccurs="1"
      maxOccurs="unbounded">
      <alternate minOccurs="1"
       maxOccurs="1">
       <elementRef key="schemaSpec"/>
       <classRef key="model.common"/>
      </alternate>
      <classRef key="model.global"
       minOccurs="0" maxOccurs="unbounded"/>
     </sequence>
     <sequence minOccurs="0"
      maxOccurs="unbounded">
      <alternate>
       <classRef key="model.div2Like"/>
       <classRef key="model.divGenLike"/>
      </alternate>
      <classRef key="model.global"
       minOccurs="0" maxOccurs="unbounded"/>
     </sequence>
    </sequence>
   </alternate>
   <sequence minOccurs="0"
    maxOccurs="unbounded">
    <classRef key="model.divBottom"/>
    <classRef key="model.global"
     minOccurs="0" maxOccurs="unbounded"/>
   </sequence>
  </sequence>
 </sequence>
</content>
Schema Declaration 
<rng:element name="div1">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.global.rendition.attributes"/>
 <rng:ref name="att.global.linking.attributes"/>
 <rng:ref name="att.global.analytic.attributes"/>
 <rng:ref name="att.global.facs.attributes"/>
 <rng:ref name="att.global.change.attributes"/>
 <rng:ref name="att.global.responsibility.attributes"/>
 <rng:ref name="att.global.source.attributes"/>
 <rng:ref name="att.divLike.attributes"/>
 <rng:ref name="att.metrical.attributes"/>
 <rng:ref name="att.fragmentable.attributes"/>
 <rng:ref name="att.typed.attributes"/>
 <rng:ref name="att.declaring.attributes"/>
 <rng:group>
  <rng:zeroOrMore>
   <rng:choice>
    <rng:ref name="model.divTop"/>
    <rng:ref name="model.global"/>
   </rng:choice>
  </rng:zeroOrMore>
  <rng:group>
   <rng:optional>
    <rng:choice>
     <rng:group>
      <rng:oneOrMore>
       <rng:choice>
        <rng:ref name="model.div2Like"/>
        <rng:ref name="model.divGenLike"/>
       </rng:choice>
       <rng:zeroOrMore>
        <rng:ref name="model.global"/>
       </rng:zeroOrMore>
      </rng:oneOrMore>
     </rng:group>
     <rng:group>
      <rng:group>
       <rng:oneOrMore>
        <rng:choice>
         <rng:ref name="schemaSpec"/>
         <rng:ref name="model.common"/>
        </rng:choice>
        <rng:zeroOrMore>
         <rng:ref name="model.global"/>
        </rng:zeroOrMore>
       </rng:oneOrMore>
      </rng:group>
      <rng:group>
       <rng:zeroOrMore>
        <rng:choice>
         <rng:ref name="model.div2Like"/>
         <rng:ref name="model.divGenLike"/>
        </rng:choice>
        <rng:zeroOrMore>
         <rng:ref name="model.global"/>
        </rng:zeroOrMore>
       </rng:zeroOrMore>
      </rng:group>
     </rng:group>
    </rng:choice>
    <rng:group>
     <rng:zeroOrMore>
      <rng:ref name="model.divBottom"/>
      <rng:zeroOrMore>
       <rng:ref name="model.global"/>
      </rng:zeroOrMore>
     </rng:zeroOrMore>
    </rng:group>
   </rng:optional>
  </rng:group>
 </rng:group>
</rng:element>
element div1
{
   att.global.attributes,
   att.global.rendition.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   att.global.responsibility.attributes,
   att.global.source.attributes,
   att.divLike.attributes,
   att.metrical.attributes,
   att.fragmentable.attributes,
   att.typed.attributes,
   att.declaring.attributes,
   (
      ( model.divTop | model.global )*,
      (
         (
            (
               ( ( ( model.div2Like | model.divGenLike ), model.global* )+ )
             | (
                  ( ( ( schemaSpec | model.common ), model.global* )+ ),
                  ( ( ( model.div2Like | model.divGenLike ), model.global* )* )
               )
            ),
            ( ( model.divBottom, model.global* )* )
         )?
      )
   )
}