This document lists errata in the RELAX NG Tutorial.
Replace
            <interleave>
              <text/>
              <optional>
                <element name="span">
                  <attribute name="class">
                    <value>givenName</value>
                  </attribute>
                  <text/>
                </element>
              </optional>
              <optional>
                <element name="span">
                  <attribute name="class">
                    <value>familyName</value>
                  </attribute>
                  <text/>
                </element>
              </optional>
            </interleave>
by
            <mixed>
              <optional>
                <element name="span">
                  <attribute name="class">
                    <value>givenName</value>
                  </attribute>
                  <text/>
                </element>
              </optional>
              <optional>
                <element name="span">
                  <attribute name="class">
                    <value>familyName</value>
                  </attribute>
                  <text/>
                </element>
              </optional>
            </mixed>
Source: http://lists.oasis-open.org/archives/relax-ng/200202/msg00007.html
Last updated $Date: 2002/05/07 15:14:49 $ by $Author: makoto $.