<app>

<app> (entrada de aparato crítico) contiene una entrada en el aparato crítico, con un lema opcional y, al menos, una lectura. [12.1.1 The Apparatus Entry]
Módulotextcrit — Critical Apparatus
Atributosatt.global (@xml:id, @n, @xml:lang, @rend, @style, @rendition, @xml:base, @xml:space) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change))
typeclasifica la variación contenida en tal elemento según una tipología funcional
Estado Opcional
Tipo de datos 

<rng:ref name="data.enumerated"/>
data.enumerated
fromidentifica, si es necesario, el inicio del lema en el texto base
Estado Opcional
Tipo de datos 

<rng:ref name="data.pointer"/>
data.pointer
toidentifica, si es necesario, el final del lema en el texto base
Estado Opcional
Tipo de datos 

<rng:ref name="data.pointer"/>
data.pointer
loc (localización) indica la posición de la variante en caso de usar el método de señalización de la posición de la variante en la codificación del aparato.
Estado Opcional
Tipo de datos 1–∞ apariciones de 

<rng:ref name="data.word"/>
data.word
separado por espacio en blanco
Valores A string containing a canonical reference for the passage to which the variation applies.
Miembro de
model.pPart.transcriptional
Contenido en
analysis: cl pc phr s w
core: abbr add addrLine author bibl biblScope citedRange corr date del distinct editor email emph expan foreign gloss head headItem headLabel hi item l label measure mentioned name note num orig p pubPlace publisher q quote ref reg rs said sic soCalled speaker stage street term textLang time title unclear
dictionaries: case colloc def dictScrap entryFree etym form gen gram gramGrp hyph iType lang lbl mood number orth per pos pron re sense stress subc syll tns usg xr
drama: actor camera caption castItem role roleDesc sound tech view
figures: cell
header: change distributor edition extent geoDecl handNote licence scriptNote typeNote
linking: ab seg
msdescription: accMat acquisition additions catchwords collation colophon condition custEvent decoNote explicit filiation finalRubric foliation heraldry incipit layout material musicNotation objectType origDate origPlace origin provenance rubric secFol signatures source stamp summary support surrogates watermark
namesdates: addName affiliation birth bloc country death district education faith floruit forename genName geogFeat geogName nameLink nationality occupation orgName persName placeName region residence roleName settlement sex socecStatus surname
spoken: u writing
tagdocs: eg
textcrit: lem listApp rdg wit witDetail
textstructure: byline closer dateline docAuthor docDate docEdition docImprint imprimatur opener salute signed titlePart trailer
transcr: am damage fw line metamark mod restore retrace supplied surplus zone
verse: rhyme
Puede contener
analysis: interp interpGrp span spanGrp
certainty: certainty precision respons
core: cb gap gb index lb milestone note pb
figures: figure notatedMusic
iso-fs: fLib fs fvLib
linking: alt altGrp anchor join joinGrp link linkGrp timeline
spoken: incident kinesic pause shift vocal writing
textcrit: lem rdg rdgGrp wit witDetail
transcr: addSpan damageSpan delSpan fw listTranspose metamark space substJoin
Declaración

<rng:element name="app">
 <rng:ref name="att.global.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:optional>
  <rng:attribute name="type">
   <rng:ref name="data.enumerated"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="from">
   <rng:ref name="data.pointer"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="to">
   <rng:ref name="data.pointer"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="loc">
   <rng:list>
    <rng:oneOrMore>
     <rng:ref name="data.word"/>
    </rng:oneOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:group>
  <rng:zeroOrMore>
   <rng:ref name="model.global"/>
  </rng:zeroOrMore>
  <rng:optional>
   <rng:ref name="lem"/>
   <rng:zeroOrMore>
    <rng:ref name="model.global"/>
   </rng:zeroOrMore>
   <rng:optional>
    <rng:ref name="wit"/>
    <rng:zeroOrMore>
     <rng:ref name="model.global"/>
    </rng:zeroOrMore>
   </rng:optional>
  </rng:optional>
  <rng:zeroOrMore>
   <rng:choice>
    <rng:group>
     <rng:ref name="model.rdgLike"/>
     <rng:zeroOrMore>
      <rng:ref name="model.global"/>
     </rng:zeroOrMore>
     <rng:optional>
      <rng:ref name="wit"/>
      <rng:zeroOrMore>
       <rng:ref name="model.global"/>
      </rng:zeroOrMore>
     </rng:optional>
    </rng:group>
    <rng:group>
     <rng:ref name="rdgGrp"/>
     <rng:zeroOrMore>
      <rng:ref name="model.global"/>
     </rng:zeroOrMore>
     <rng:optional>
      <rng:ref name="wit"/>
      <rng:zeroOrMore>
       <rng:ref name="model.global"/>
      </rng:zeroOrMore>
     </rng:optional>
    </rng:group>
   </rng:choice>
  </rng:zeroOrMore>
 </rng:group>
</rng:element>
element app
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   attribute type { data.enumerated }?,
   attribute from { data.pointer }?,
   attribute to { data.pointer }?,
   attribute loc { list { data.word+ } }?,
   (
      model.global*,
      ( lem, model.global*, ( wit, model.global* )? )?,
      (
         ( model.rdgLike, model.global*, ( wit, model.global* )? )
       | ( rdgGrp, model.global*, ( wit, model.global* )? )
      )*
   )
}
Ejemplo
<app>
 <lem wit="#El #Hg">Experience</lem>
 <rdg wit="#La" type="substantive">Experiment</rdg>
 <rdg wit="#Ra2" type="substantive">Eryment</rdg>
</app>
Ejemplo
<app type="substantive">
 <rdgGrp type="subvariants">
  <lem wit="#El #Hg">Experience</lem>
  <rdg wit="#Ha4">Experiens</rdg>
 </rdgGrp>
 <rdgGrp type="subvariants">
  <lem wit="#Cp #Ld1">Experiment</lem>
  <rdg wit="#La">Ex<g ref="#per"/>iment</rdg>
 </rdgGrp>
 <rdgGrp type="subvariants">
  <lem resp="#ed2013">Eriment</lem>
  <rdg wit="#Ra2">Eryment</rdg>
 </rdgGrp>
</app>
Ejemplo
<app loc="1">
 <rdg resp="#SEG">TIMΩΔA</rdg>
</app>
Ejemplo
<app loc="1-6">
 <note>Too badly worn to yield a text</note>
</app>
Ejemplo
<choice xml:id="choice3">
 <reg>σύμπαντα</reg>
 <orig>ΣΙΝΠΑΤΑΝ</orig>
</choice>
<!-- ... -->
<app from="#choice3">
 <note>Mommsen's fanciful normalization, reproduced here, has not been accepted by all recent editions</note>
</app>