using svn for collab work

Hi all

There are some peoples in my staff to want use subversion for two purposes
:

        1/ versionning etc...

        2/ Collaborative work

For the 1/ of course subversion is perfect (this peoples work on MacOS X
and Windows). For the second it's perfect too....but (of course the're "but"
;-) ) sometime this group want sent into the group a big document (for
example a book in Word, or a big picture), and those document don't need
versionning.

My question is :

        Is there any solution in subversion to versionning only in 2 or 3
        version a document ? For example if I add a

                big_document in version N

        this document is automatically delete (in repository) in version
        N+2 (or N+3 etc...) ?

        If it's not possible, can I have a folder under subversion where
        the file is not versionning but the group can acces throught
        subversion to this document ?

at least :

        If all this is impossible what's kind of software you think I must
        use for this purpose (Opensource, multi-OS (Linux/FreeBSD, MacOS X,
        and Windows).

Regards.

NB: If you ask me why I just don't let subversion store every version, it's
because this kind of documents is big...very big > 1Go, and sometime there
are lots of them. And event with subversion compression and binary diff the
repository fast become very huge.

--
Albert SHIH
Observatoire de Paris Meudon
SIO batiment 15
Heure local/Local time:
Lun 5 mar 2007 14:43:10 CET
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