mapnik/tests/visual_tests/styles/text-halign-adjust-multiline.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map>
<!-- Upright test -->
<Map background-color="white" srs="+proj=latlong +datum=WGS84">
    <Parameters>
        <Parameter name="sizes">800, 800</Parameter>
        <Parameter name="bbox">-0.05, -0.01, 0.95, 0.01</Parameter>
    </Parameters>

    <Layer name="layer" srs="+proj=latlong +datum=WGS84">
        <StyleName>My Style</StyleName>
        <Datasource>
            <Parameter name="type">csv</Parameter>
            <Parameter name="file">../data/lines2.csv</Parameter>
        </Datasource>
    </Layer>

    <Style name="My Style">
        <Rule>
            <LineSymbolizer
                stroke-width="12"
                stroke="red"
                />
            <TextSymbolizer
                face-name="DejaVu Sans Book"
                size="16"
                placement="line"
                max-char-angle-delta="0"
                horizontal-alignment="adjust"
                >"Adjust\nmultiline"</TextSymbolizer>
        </Rule>
    </Style>

</Map>