We would probably be better off maintaining documentation in one place - the manual.
Links to the manual could have "placeholders" for version and language (based on the language chosen by the user).
The base URL of those links could also be configurable, so a somewhat paranoid library could link to their own local version of the manual, instead of being potentially tracked by a central server.
I really like this idea!
*** This bug has been marked as a duplicate of bug 19817 ***
*** Bug 11115 has been marked as a duplicate of this bug. ***