[Openstreetmap] Map formats?

[Petter Reinholdtsen]

[SteveC]
> yes, the format stuff is going to be important.

What are the formats used elsewhere in the world?  What are you using?

> Even more critical is versioning. In a wiki you can version on the
> page name. We can't version on the streetname or location of map
> data since its all liable to change. I'm guessing having a unique
> key is going to be the only way out. :-(

Unique IDs is probably a good idea.  But I'm not sure if I understand
what you mean by versioning.  Are you talking about revision control
(aka change history), or something else.