Hi Reinhold,
the values "above" and "below" of the 'placement'-attribute don't seem to
show any effect in the <direction>-element, e.g. when you substitute
"below" for "above" in the following code the result of the conversion is
the same. (See: 33a-Spanners.xml in
http://www.kainhofer.net/musicxml/MusicXML-TestSuite-0.1.zip)
<!-- snip -->
<!--=======================================================-->
<measure number="15">
<direction placement="above">
<direction-type>
<dashes number="1" type="start"/>
</direction-type>
</direction>
<!-- snip -->
BTW: Is the wavy line of the trill mark supposed to extend to the end of
the example in 33a-Spanners.xml? Shouldn't it rather be: