Overlapping page regions

"G. Ken Holman" <[email protected]>
Newsgroups gmane.org.w3c.xsl-editors
Message-ID <[email protected]>
Hi folks!

Reviewing XSL 1.0 6.4.13, in particular the second note, I note no 
restrictions on the overlapping of the body region with perimeter regions.

Is it considered bad form to do so?  I have a particular situation where I 
wish to overlap a paginated flow on top and in the middle of a detailed 
static background.  I am not getting any error messages with two engines 
I'm using, and I cannot see any restrictions in the spec to prevent me from 
doing so.  The extent of my region-before runs to the bottom of the page 
providing the background upon which I flow my content in the overlapping 
region-body.

The nature of my question today is, is this intentional in the 
specification to allow the regions to overlap, or is it a byproduct of the 
way the specification was written?  Can I rely on no errors to be produced 
by a conforming engine?

Thanks!

......................... Ken

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