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This memo describes a batch of Presence Information Data Format
(PIDF) and its extension schemas written with the RELAX NG schema
language. Unlike with the current W3C XML Schema language it is
possible to write reasonable forwards and backwards compatible
presence combination schemas. These RELAX NG schemas are stricter
than the W3C Schemas and thus the instance documents that validate
with these schemas follow the intended content model more closely.
Especially, these schemas are targeted to actual implementations in
order to decrease interoperability problems.
Jari Urpalainen <email@example.com>
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)