<?xml version="1.0"?>
<!-- network-related definitions used in multiple grammars -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

  <define name="filterref-node-attributes">
    <attribute name="filter">
      <data type="NCName"/>
    </attribute>
    <zeroOrMore>
      <element name="parameter">
        <attribute name="name">
          <ref name="filter-param-name"/>
        </attribute>
        <attribute name="value">
          <ref name="filter-param-value"/>
        </attribute>
      </element>
    </zeroOrMore>
  </define>

  <define name="filter-param-name">
    <data type="string">
      <param name="pattern">[a-zA-Z0-9_]+</param>
    </data>
  </define>
  <define name="filter-param-value">
    <data type="string">
      <param name="pattern">[a-zA-Z0-9_\.:]+</param>
    </data>
  </define>

</grammar>