jevans: Funny, that was partly my thinking as I used to be a programmer - I say used to be since I haven't done any serious programming in years so I'm rather out of touch with current systems, but I still relate to things ... I think though that the CR2 files are an example of the age old tradition amoung programmers of patching rather than re-working [heh] I would say though that obsolete code is likely still there in part because if someone is using an older version of Poser that code may be needed - it gives more backward compatability.  I know that anything I create I like to have it usable with Poser 4 and up at least - since I don't have access to Poser 3 I have no way of knowing if things work with it or not.

ockham: Yes, the files can use optumising, no doubt.  I tend to go through and make sure there is no data which was used early in developing a figure [such as materials which I may have gotten rid of]