<alt>

<alt> (alternancia) identifica una alternancia o una serie de elecciones entre los elementos o los pasajes de texto. 16.8 Alternation
Módulolinking — 16 Linking, Segmentation, and Alignment
Atributosatt.global (@xml:id, @n, @xml:lang, @rend, @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.pointing (@target, @evaluate) att.typed (@type, @subtype)
targetsindica los identificadores de elementos o pasajes de texto alternativos.
Estado Opcional
Tipo de datos 2–∞ apariciones de 

<rng:ref name="data.pointer"/>
data.pointer
separado por espacio en blanco
Valores Each value specified must be the same as that specified as value for an xml:id attribute for some other element in the current document.
modedeclara si las alternativas contenidas en el conjunto son exclusivas o inclusivas.
Estado Recomendado
Los valores admitidos son:
excl
(indica que la alternancia es exclusiva, es decir, que aparece sólo una de las posibles alternativas.) indica que la alternancia es exclusiva, es decir, que como máximo una de las alternativas ocurre.
incl
(inclusivoindica que la alternancia no es exclusiva, es decir, que pueden aparecer una o más alternativas de las posibles.) indica que la alternancia no es exclusiva, es decir que ocurren una o más de las alternativas.
weightssi el atributo mode es excl, cada peso representa la probabilidad de que aparezca la alternativa correspondiente; si el atributo mode es incl, cada peso representa la probabilidad de que aparezca la alternativa correspondiente a condición que aparezca al menos otra de las posibles alternativas.
Estado Opcional
Tipo de datos 2–∞ apariciones de 

<rng:ref name="data.probability"/>
data.probability
separado por espacio en blanco
Valores a whitespace-separated list of probability values in the range from 0 to 1.
Usado por
model.global.meta
Contenido en
analysis: cl m phr s span w
core: abbr add addrLine address author bibl biblScope cit corr date del distinct editor email emph expan foreign gloss head headItem headLabel hi imprint item l label lg list measure mentioned name note num orig p pubPlace publisher q quote ref reg resp rs said series sic soCalled sp speaker stage street term time title unclear
corpus: activity channel constitution derivation domain factuality interaction locale preparedness purpose
dictionaries: case colloc def dictScrap entry entryFree etym form gen gram gramGrp hom hyph iType lang lbl mood number orth per pos pron re sense stress subc syll tns usg xr
drama: actor camera caption castGroup castItem castList epilogue performance prologue role roleDesc set sound tech view
figures: cell figure table
header: authority change classCode creation distributor edition extent funder geoDecl handNote language principal scriptNote sponsor typeNote
linking: ab altGrp seg
msdescription: accMat acquisition additions catchwords collation colophon condition custEvent decoNote explicit filiation finalRubric foliation heraldry incipit layout material msItem musicNotation objectType origDate origPlace origin provenance rubric secFol signatures source stamp summary support surrogates textLang watermark
namesdates: addName affiliation age birth bloc country death district education faith floruit forename genName geogName langKnown nameLink nationality occupation orgName persName person placeName region residence roleName settlement sex socecStatus surname
nets: graph
spoken: u writing
tagdocs: valDesc
textcrit: app lem rdg wit witDetail
textstructure: argument back body byline closer dateline div div1 div2 div3 div4 div5 div6 div7 docAuthor docDate docEdition docImprint docTitle epigraph floatingText front group imprimatur opener postscript salute signed text titlePage titlePart trailer
transcr: damage fw restore supplied surplus
verse: metSym rhyme
Puede contenerElemento vacío
Declaración

<rng:element name="alt">
 <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.pointing.attributes"/>
 <rng:ref name="att.typed.attributes"/>
 <rng:optional>
  <rng:attribute name="targets">
   <rng:list>
    <rng:ref name="data.pointer"/>
    <rng:ref name="data.pointer"/>
    <rng:zeroOrMore>
     <rng:ref name="data.pointer"/>
    </rng:zeroOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="mode">
   <rng:choice>
    <rng:value>excl</rng:value>
    <rng:value>incl</rng:value>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="weights">
   <rng:list>
    <rng:ref name="data.probability"/>
    <rng:ref name="data.probability"/>
    <rng:zeroOrMore>
     <rng:ref name="data.probability"/>
    </rng:zeroOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:empty/>
</rng:element>
element alt
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.pointing.attributes,
   att.typed.attributes,
   attribute targets { list { data.pointer, data.pointer, data.pointer* } }?,
   attribute mode { "excl" | "incl" }?,
   attribute weights
   {
      list { data.probability, data.probability, data.probability* }
   }?,
   empty
}
Schematron

<s:report test="@target and @targets">You may not supply both
@target and @targets</s:report>
Schematron

<s:report test="not(@target) and not(@targets)">You must
supply either @target or @targets</s:report>
Schematron

<s:assert test="contains(@target,' ')">You must supply at least two
values for @target</s:assert>
Ejemplo
<alt mode="excl" targets="#we.fun #we.sun" weights="0.5 0.5"/>