On Tue, 11 May 1999, Lou Burnard wrote:
> Michael and I have been working on this for the last few months. We
> have a working draft, almost complete, of a set of TEI extension files
> which will enable us to generate XML-compatible of any view of the TEI
> dtd. The first thing we produce with it will be a real XML version of
> TEI Lite (Patrice B.'s version is only a toy) and we hope to have this
> available by the ACH-ALLC conference next month.
TEI Lite includes the elements XPTR and XREF, used for creating pointers
to material outside the document. Is there any plan to make the TEI or
its lite version or both compliant with the eventual W3C
reccommendations for Linking and Pointing?
XPointer, the XML Pointer Language, is of course based on the Extended
Pointer syntax, with some simplifications (like no reg exp patterns),
some additions (in addition to elements and attributes, you can specify
processing instructions and CDATA sections), and a few modifications (to
make them conform to the syntax for URIs). So, no steep learning curve.
To conform to XLink, the XML Linking Language, would however require
modifications to the attributes of xptr and xref, in particular, 'from',
'to' and 'doc'. XLink requires that locator and pointer be stuck
together into a single URI, separated by a '#', and XPointer provides
that a spanning pointer may contain two complete XPointer strings
separated by ','. So, instead of 'from', 'to', and 'doc', only one
attribute is needed.
Then there is the question of all the other attributes specified by
XLink for specifying the behavior of links, the intent of some of which
overlap with attributes already present in xptr and xref.
It may be possible to remap the current set of attributes using the
techniques for remapping spelled out in XLink. But unless those
attributes' current semantics are expressly deprecated, that would be
Any interest in discussing this further?
- Gregory Murphy <[log in to unmask]>
__o Software Engineer
_`\<,_ Solaris Software
(*)/ (*) Sun Microsystems