alt

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C Elements

<alt>

<alt> (alternation) identifies an alternation or a set of choices among elements or passages. 16.8 Alternation

Modul linking — 16 Linking, Segmentation, and Alignment

Attribute

att.pointing (@type, @evaluate)

targets

specifies the identifiers of the alternative elements or passages.

Zustand	Obligatorisch
Datentyp	2–∞ occurrences of <rng:ref name="data.pointer"/> data.pointer separated by whitespace
Werte	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.

mode

states whether the alternations gathered in this collection are exclusive or inclusive.

Zustand	Empfohlen
Gültige Werte:	excl (exclusive) indicates that the alternation is exclusive, i.e. that at most one of the alternatives occurs. incl (inclusive) indicates that the alternation is not exclusive, i.e. that one or more of the alternatives occur.

weights

If mode is excl, each weight states the probability that the corresponding alternative occurs. If mode is incl each weight states the probability that the corresponding alternative occurs given that at least one of the other alternatives occurs.

Zustand	Optional
Datentyp	1–∞ occurrences of <rng:ref name="data.probability"/> data.probability separated by whitespace
Werte	a whitespace-separated list of probability values in the range from 0 to 1.
Anmerkung	If mode is `excl`, the sum of weights must be 1. If mode is `incl`, the sum of weights must be in the range from 0 to the number of alternants.

Verwendet von altGrp model.global.meta

Kann enthalten Empty element

Deklaration


<rng:element name="alt">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.pointing.attributes"/>
<rng:attribute name="targets">
 <rng:list>
  <rng:ref name="data.pointer"/>
  <rng:oneOrMore>
   <rng:ref name="data.pointer"/>
  </rng:oneOrMore>
 </rng:list>
</rng:attribute>
<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:oneOrMore>
    <rng:ref name="data.probability"/>
   </rng:oneOrMore>
  </rng:list>
 </rng:attribute>
</rng:optional>
<rng:empty/>
</rng:element>

element alt
{
   att.global.attributes,
   att.pointing.attributes,
   attribute targets { list { data.pointer, data.pointer+ } },
   attribute mode { "excl" | "incl" }?,
   attribute weights { list { data.probability+ } }?,
   empty
}

Beispiel

P5: Guidelines for Electronic Text Encoding and Interchange

<alt>