XML Pocket Reference, 3rd Edition

Name

rng:ref — Refers to a named pattern

XML syntax example

<grammar xmlns="http://relaxng.org/ns/structure/1.0">

<start>
 <ref name="torque"/>
</start>

<define name="torque">
 <element name="torque">
  <attribute name="value"/>
  <empty/>
 </element>
</define>

</grammar>

Compact syntax example

start = torque
torque = element torque { attribute value { text }, empty }

Parents

attribute, choice (( ) and |), define (name of pattern followed by =), element, except (-), group (( ) and ,), interleave (&), list, mixed, oneOrMore (+), optional (?), start (start followed by =), zeroOrMore (*)

Description

The ref pattern refers to a named pattern in a define element. In the compact syntax, a reference is made to a named pattern by using the name of the pattern by itself. References may be recursive (a ref within a named pattern may refer to itself) provided the reference is directly or indirectly within an element pattern that is contained in the definition.

See also

§4, define, externalRef, parentRef