You can certainly have as many child elements within <choice> as you 
like. The <alt> element however is not currently a member of the 
model.choicePart class, because it is used to express alternation in a 
rather different (but more general) way. See 
http://www.tei-c.org/release/doc/tei-p5-doc/html/SA.html#SAAT for 
discussion of this more general method.

<choice> is intended for much simpler applications, where all that is 
needed is the ability to say that there's more than one way to encode a 
specific phenomenon.  Note also that the relationship between one <alt> 
and another is not necessarily the same as that between one choicePart 
and another: all the children of <choice> have equal weight whereas 
<alt>s can be given probabilities.



   Tim Finney wrote:

> I would like to see <choice> able to take two or more <alt>ernatives. In
> one school of thought, the obverse of 'unclear' is 'clear.' In another,
> less constrained, universe there are many parallel unclears.
> 
> E.g.
> 
> He possessed
> <choice><alt>nuclear</alt><alt>unclear</alt><alt>invisible</alt></choice> WMDs.
> 
> Best
> 
> Tim Finney
> 
> 
> On Thu, 2006-03-09 at 11:21 -0700, Dan O'Donnell wrote:
> 
> 
>>I don't remember what the janus pair of unclear would be, but you can
>>certainly see that it might mark a point of simultaneous markup... maybe
>><unclear><supplied>?
>>
> 
>