On Sat, Jul 10, 2010 at 1:56 AM, Terry J. Reedy <report@bugs.python.org>wrote:

> I think this effectively impossible for volunteers. Microsoft has 1000s of
> paid employees. Chapter and Sections numbers do not match from version to
> version.
>

We don't need to match numbers, we just need to match links, which in 99% of
all cases follow a regular pattern:

For example:

http://docs.python.org/py3k/library/fractions.html
http://docs.python.org/library/fractions.html
http://docs.python.org/release/2.6.5/library/fractions.html

It's pretty easy to generate the links to the corresponding pages.  The
trickier part is testing that the link is valid when building the pages.

In an ideal universe, there would be a way to manually specify when a page
has been renamed (e.g., _winreg -> winreg), but even if those links were
missing it would still be quite useful (IMO, of course).

How many other versions would you link to? Multiple links could get a bit
> ugly.
>

The same number as currently listed in the sidebar on the index page.