Re: Element Structure for XML (Clause 7)

>> Fourth, I still just don't get it.  What's so hard about PIs?
>One thing that's hard is the rules about how REs adjacent to PIs are

David Durand and I independently came up with a good way of dealing
with such things (he had the idea before me, as Setev later let me
know): define RE and RS such that they'll never occur in an XML
document. That alone will simplify parsers a great deal.