test.xml

Dive into python的配套源码。

<?xml version="1.0"?>
<!DOCTYPE grammar PUBLIC "-//diveintopython.org//DTD Kant Generator Pro v1.0//EN" "kgp.dtd">
<grammar>
<ref id="a">
  <p>0</p>
</ref>
<ref id="b">
  <p>1</p>
  <p>1</p>
</ref>
<ref id="c">
  <p chance="100">2</p>
</ref>
<ref id="d">
  <p chance="0">3</p>
</ref>
<ref id="e">
  <p><xref id="a"/></p>
</ref>
<ref id="f">
  <p><xref id="b"/><xref id="a"/></p>
</ref>
<ref id="g">
  <p><choice><p>1</p><p>1</p></choice></p>
</ref>
</grammar>