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Why ?
Major concern in IETF-61: partial-pidf-format-02 and xcap-package had some overlapping
Other event packages that describe xml-patching with their own semantics: watcher-info, conference-info, presence filtering etc.
How about describing common semantics so that implementations actually need less code ?
Why a framework ?
Applications utilizing these patch operations may need more features (or probably even less)
Easy to “include” these semantics into the framing document
PPT Version