[Om] Multistep "equation" symbol?

[Peter Horn]

Hi!

From
http://www.openmath.org/standard/om20-2004-06-30/openmath2.rng
I understand that OMFOREIGN must contain valid XML. You frequently use  
stuff like:

> <OMA><OMS name="multistep">
>   <OMFOREIGN encoding="LaTeX">
>     \sqrt{n^2+1} - n
>   </OMFOREIGN>

which is -- from my point of view -- not valid OpenMath at all.

Am I wrong, or is there some secret spec allowing stuff like this?

It's of some importance, cause all our parsers would reject it  
currently.

Best regards, Peter
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