mapnik/tests/visual_tests/styles/text-upright.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map>
<Map background-color="white" srs="+proj=latlong +datum=WGS84">
    <Parameters>
        <Parameter name="sizes">800, 800</Parameter>
        <Parameter name="bbox">-1.05, -1.05, 1.05, 1.05</Parameter>
    </Parameters>

    <Layer name="layer" srs="+proj=latlong +datum=WGS84">
        <StyleName>lines</StyleName>
        <StyleName>text</StyleName>
        <Datasource>
            <Parameter name="type">csv</Parameter>
            <Parameter name="inline">
                id, wkt, upright
                 0, "LINESTRING(1   0, 0 -1,   -1   0, 0 1,   1   0)", "[default]"
                 1, "LINESTRING(0.9 0, 0 -0.9, -0.9 0, 0 0.9, 0.9 0)", "auto"
                 2, "LINESTRING(0.8 0, 0 -0.8, -0.8 0, 0 0.8, 0.8 0)", "auto-down"
                 3, "LINESTRING(0.7 0, 0 -0.7, -0.7 0, 0 0.7, 0.7 0)", "left"
                 4, "LINESTRING(0.6 0, 0 -0.6, -0.6 0, 0 0.6, 0.6 0)", "right"
                 5, "LINESTRING(0.5 0, 0 -0.5, -0.5 0, 0 0.5, 0.5 0)", "left-only"
                 6, "LINESTRING(0.4 0, 0 -0.4, -0.4 0, 0 0.4, 0.4 0)", "right-only"
            </Parameter>
        </Datasource>
    </Layer>

    <Style name="lines">
        <Rule>
            <LineSymbolizer
                stroke-width="12"
                stroke="rgb(255, 100, 100)"
                />
        </Rule>
    </Style>

    <Style name="text">
        <Rule>
            <Filter>[id] = 0</Filter>
            <TextSymbolizer
                face-name="DejaVu Sans Book"
                size="16"
                placement="line"
                spacing="100"
                max-char-angle-delta="0"
                >[upright]</TextSymbolizer>
        </Rule>
        <Rule>
            <ElseFilter />
            <TextSymbolizer
                face-name="DejaVu Sans Book"
                size="16"
                placement="line"
                spacing="100"
                upright="[upright]"
                max-char-angle-delta="0"
                >[upright]</TextSymbolizer>
        </Rule>
    </Style>

</Map>