<cRefPattern>

<cRefPattern> (canonical reference pattern) specifies an expression and replacement pattern for transforming a canonical reference into a URI. [2.3.6.3. Milestone Method 2.3.6. The Reference System Declaration 2.3.6.2. Search-and-Replace Method]
Moduleheader
Attributesatt.global (@xml:id, @n, @xml:lang, @xml:base, @xml:space) (att.global.rendition (@rend, @style, @rendition)) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change)) (att.global.responsibility (@cert, @resp)) (att.global.source (@source)) att.patternReplacement (@matchPattern, @replacementPattern)
Contained by
header: refsDecl
May contain
core: p
linking: ab
Note

The result of the substitution may be either an absolute or a relative URI reference. In the latter case it is combined with the value of xml:base in force at the place where the cRef attribute occurs to form an absolute URI in the usual manner as prescribed by XML Base.

Example
<cRefPattern matchPattern="([1-9A-Za-z]+)\s+([0-9]+):([0-9]+)"
 replacementPattern="#xpath(//div[@type='book'][@n='$1']/div[@type='chap'][@n='$2']/div[@type='verse'][@n='$3'])"/>
Content model
<content>
 <classRef key="model.pLike" minOccurs="0"
  maxOccurs="unbounded"/>
</content>
Schema Declaration
element cRefPattern
{
   tei_att.global.attributes,
   tei_att.patternReplacement.attributes,
   tei_model.pLike*
}