run-in boxes

Hi there,

I am unable to determine the normal rendering of the following table
cell

<TD style="text-align : right">
<H1 style="display : run-in ; text-align : center">Section 1</H1>
<P style="text-align : left">First paragraph of this section</P>
...
</TD>

What is centered and what is not ? The H1 is a run-in block preceeding
another block blox so it should become the first inline-box of the
P. But text alignment is not the same. Furthermore, the spec says that
the H1 inherits from the TD and not from the P...

At this point, I'm not ashamed to admit I'm lost :-( Any help welcome !

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