I can accept dropping the PCData - it takes out a nuisance declaration - but 
now I wonder about PCData elements.  They're technically Mixed but without any 
optional elements.  Do we need PCData elements?
Also, why does the element need a frequency attribute?  Isn't that built into 
the nature of Mixed?  It's not like you can nest a Mixed content model under a 
Choice or Seq directly or anything...
Simon St.Laurent
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