The second line in this example is:

<p:with-input port-"source">

The second hyphen should be an equal sign. The correct line is:

<p:with-input port="source">

The first line in this example is:

<option name="debug" select="true()" static="true"

However, the <option> element is missing the namespace prefix p. The correct line is:

<p:option name="debug" select="true()" static="true"

The built-in Library step used here is shown as <p:set-attribute>, but it should be <p:add-attribute>, as shown below (changes highlighted in bold text):

<p:variable name="prefix" as="xs:string" select="'myapp-'"/&gt;
…
<p:add-attribute>
    <p:with-option name="match" select="'/*'"/>
    <p:with-option name="attribute-name" select="concat($prefix, 'att1')"/>
    <p:with-option name="attribute-value" select="…some other computed value…"/>
</p:add-attribute>

The second occurrence of <p:option> in Example 8.4 should be <p:with-option>, and the <p:with-option> element needs to be closed (changes highlighted in bold text):

<p:option name="parameter-to-pass-to-xslt"/>
…
<p:xslt>
    <p:with-input port="stylesheet" href="xslt-with-parameters.xsl"/>
    <p:with-option name="parameters"
        select="map { 'first-param' : $parameter-to-pass-to-xslt,
                      'second-param' : 12345 }"/>
</p:xslt>

This example contains an invalid attribute name for the <p:add-attribute> step. The example uses a select attribute, but it should be the attribute-value attribute (change highlighted in bold text):

<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">

  <p:input port="source"/>
  <p:output port="result"/>

  <p:for-each>
    <!-- 1 - Selection using the p:for-each's anonymous input port: -->
    <p:with-input select="/*/doc"/>
    <!-- 2 - Add a timestamp attribute: -->
    <p:add-attribute attribute-name="timestamp"
                     attribute-value="{current-dateTime()}"/>
    <!-- 3 - Write the result to disk: -->
    <p:store href="{concat('/some/path/doc-',
             p:iteration-position(), '.xml')}"/>
  </p:for-each>

  <!-- 4 - Discard the documents, just report a count: -->
  <p:count/>

</p:declare-step>

The text and title for the section “The xml:id attribute” on page 76 should be as follows:

“The xml:id, xml:lang, and xml:space attributes”

The xml:id, xml:lang, and xml:space attributes can appear anywhere. Currently, XProc does nothing with these attributes.