<table frame="all">
    <title>Title</title>
    <tgroup cols="3">
        <thead valign="bottom">
            <row>
                <entry>
                    <?dbfo orientation="90"?>
                    <?dbfo rotated-width="1in"?>
                    FirstCell
                </entry>
                <entry>
                    <?dbfo orientation="90"?>
                    <?dbfo rotated-width="1in"?>
                    SecondCell
                </entry>
                <entry>
                    <?dbfo orientation="90"?>
                    <?dbfo rotated-width="1in"?>
                    ThirdCell
                </entry>
            </row>
        </thead>
        <tbody>
            <row>
                <entry>1</entry>
                <entry>2</entry>
                <entry>3</entry>
            </row>
            <row>
                <entry>4</entry>
                <entry>5</entry>
                <entry>6</entry>
            </row>
        </tbody>
    </tgroup>
</table>

<?dbfo orientation="90"?>
<?dbfo rotated-width="1in"?>