Caching

The caching issue has me quite concerned. I see three options:

1. We say nothing about it. Some implementations will cache, others
won't. Even on systems that don't cache, side effects of operation
will sometimes make caching appear to happen and sometimes not.

2. We require caching. This may be a significant implementation issue.
It looks like a big step for V1.

3. We forbid caching. This may be a significant implementation issue.
It may not even be possible for some implementations to prevent side
effects from "effective" caching.

The interoperability problems of choice 1 disturb me, but I've always
expected to do caching.

Are there other options?

                                        Be seeing you,
                                          norm

-- 
Norman Walsh
XML Standards Architect
Sun Microsystems, Inc.