"Ken" == G Ken Holman <gkholman(_at_)CraneSoftwrights(_dot_)com> writes:
Ken> The Unicode characters  through  are
Ken> specifically "non-characters", which means they must not be
Ken> used to represent characters in a data stream between sender
Ken> and receiver. This means that two trading partners must not
Ken> use them in XML documents, which makes them available for
Ken> XSLT users for this character mapping technique without
Ken> interfering with user data.
No - they are not available for XSLT users. The author of the XSLT
transformation could be considered the sender, and the XSLT processor
could be considered the receiver.
Non-characters can only be used in application-specific protocols
which are not visible to users. So, for instance, they might be used
in the internals of an XSLT processor as special markers (Saxon uses
NULLs for such a purpose, as they cannot occur in XML data, but it
could equally use a non-character for such a purpose).
--
Colin Adams
Preston Lancashire
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