relax - Grammar language

relax is a grammar language created in 2000 by Makoto Murata.

#2410on PLDB

24Years Old

relax website
relax first developed in https://www.gr.jp

Example from the web:

<module
      moduleVersion="1.2"
      relaxCoreVersion="1.0"
      targetNamespace=""
      xmlns="http://www.xml.gr.jp/xmlns/relaxCore">

  <interface>
    <export label="doc"/>
  </interface>

  <elementRule role="doc">
    <sequence>
      <ref label="title"/>
      <ref label="para" occurs="*"/>
    </sequence>
  </elementRule>
 
  <elementRule role="para">
    <mixed>
      <ref label="em" occurs="*"/>
    </mixed>
  </elementRule>
  
  <elementRule role="title">
    <mixed>
      <ref label="em" occurs="*"/>
    </mixed>
  </elementRule>

  <elementRule role="em" type="string"/>
  
  <tag name="doc"/>

  <tag name="para">
    <attribute name="class" type="NMTOKEN"/>
  </tag>
  
  <tag name="title">
    <attribute name="class" type="NMTOKEN"/>
    <attribute name="number" required="true" type="integer"/>
  </tag>

  <tag name="em"/>

</module>