probable typo/bug in XSL spec in table display-align

In 6.7.1.1.2 Simple Table with Relative Column-width Specifications,
the example stylesheet and Fo result assign a value of "top" to
display-align [1].

However, the allowable values of display-align [2] do not include "top".
(The stylesheet, as written, would also pass through an invalid value
of "bottom".)

I believe this is a bug in the spec.  The correction is to fix the
stylesheet so that it explicitly converts values of top and bottom
(as it now does with middle) to appropriate values for display-align
and to correct the FO result accordingly.

paul


[1] http://www.w3.org/TR/xsl/slice6.html#section-N15447-Introduction
[2] http://www.w3.org/TR/xsl/slice7.html#display-align