breakable rigid constraints
I'm a little bit confused by the 1.4 documentation. It has a section where it talks about breakable constraints, but as far as I can tell there is no way to define them. Is this something that will be added in the future, or am I missing something?
yes, it is a mistake, the specification was not finished, and therefore was not supposed to be included for the 1.4 release.
The next release will be a bug fix release (to remove mention of breakable constraints for example)
I do not know when breakable constraint design will be done and added to COLLADA. Is that a high priority for you ?
Yes, it would be really nice if there were implemented, but for now we'll probably just write an extension or something to get around it.