Version 5.8.0

# Markers

Markers are invisible characters that are inserted into the text. A name is always assigned to these characters. After the character is output on a page, you can ask the Publisher for the page number. The structure is as follows:

    <PlaceObject>
      <Textblock>
        <Mark select="'textstart'"/>
        <Paragraph>
          <Value>
          Row
          Row
          Row
          Row
           </Value>
        </Paragraph>
      </Textblock>
    </PlaceObject>

After outputting the page, the page number can now be determined with `sd:pagenumber('textstart')`.

The markers are automatically stored in an internal auxiliary file `publisher.aux` so that when the page numbers are scanned again with `sd:pagenumber()`, they are available before the page is placed. A simple text structure is used as an example (it is the same example as in the next section):

    <data>
      <chapter titel="Foreword">
        <text>...</text>
      </chapter>
      <chapter titel="Introduction">
        <text>...</text>
      </chapter>
      <chapter titel="Conclusion">
        <text>...</text>
      </chapter>
    </data>

Which is output with the following layout:

    <Layout
      xmlns="urn:speedata.de:2009/publisher/en"
      xmlns:sd="urn:speedata:2009/publisher/functions/en">

      <DefineFontfamily name="title" fontsize="18" leading="20">
        <Regular fontface="sans"/>
      </DefineFontfamily>

      <Record element="data">
        <!-- This point will be completed further below -->
        <ProcessNode select="chapter"/>
      </Record>

      <Record element="chapter">
        <PlaceObject>
          <Textblock>
            <Mark select="@title"/>
            <Paragraph fontfamily="title">
              <Value select="@title"/>
            </Paragraph>
            <Paragraph>
              <Value select="text"/>
            </Paragraph>
          </Textblock>
        </PlaceObject>
        <ClearPage/>
      </Record>
    </Layout>

The basic framework for the markers. The place for the table of contents will be extended later (see comment).

The Publisher now assigns the chapters to the page number. You can now output the table of contents on the next pass:

      <PlaceObject>
        <Table padding="5pt">
          <ForAll select="chapter">
            <Tr>
              <Td><Paragraph><Value select="@title"/></Paragraph></Td>
              <Td><Paragraph>
                   <Value select="sd:pagenumber(@title)"/> <!--1-->
              </Paragraph></Td>
            </Tr>
          </ForAll>
        </Table>
      </PlaceObject>
      <ClearPage/>

This part is inserted into the layout above to output the table of contents.

1. In a further pass, the page numbers are available before the actual chapters are written to the following pages.

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