Interactive map of Linux kernel

A good way to get started with the kernel source code is to look at version 0.0.1, which can be found here: <a href="http://www.kernel.org/pub/linux/kernel/Historic/" rel="nofollow">http://www.kernel.org/pub/linux/kernel/Historic/</a>

Some previous submissions:<p><a href="http://news.ycombinator.com/item?id=42795" rel="nofollow">http://news.ycombinator.com/item?id=42795</a><p><a href="http://news.ycombinator.com/item?id=113223" rel="nofollow">http://news.ycombinator.com/item?id=113223</a><p><a href="http://news.ycombinator.com/item?id=503796" rel="nofollow">http://news.ycombinator.com/item?id=503796</a><p><a href="http://news.ycombinator.com/item?id=514272" rel="nofollow">http://news.ycombinator.com/item?id=514272</a><p><a href="http://news.ycombinator.com/item?id=514723" rel="nofollow">http://news.ycombinator.com/item?id=514723</a><p><a href="http://news.ycombinator.com/item?id=1363911" rel="nofollow">http://news.ycombinator.com/item?id=1363911</a><p>Interestingly, no significant comments on any of them.

I feel like I'm missing some key information that would make it more useful.<p>I guess it's the "interactive map" part that throws me off. The zooming and navigation just seems pointless. It doesn't zoom into enough detail to make it worthwhile.<p>The main page [1] seems like a nice collection of links, though, so I got something out of it, at least.<p>[1] <a href="http://www.makelinux.net/reference" rel="nofollow">http://www.makelinux.net/reference</a>

It looks neat at first but I'm not sure what it is supposed to do? Maybe it does not function well with Firefox. Respectfully I am more comfortable with just using lxr myself...if not plain old tree, ack-grep, etc.

How was this map made? I assume with a manual process, but perhaps using some automated tool to make things easier? I'd like to see a similar visualization of the FreeBSD kernel.

Conceptualization at it's finest, thanks!