Interpreting Show InnoDB Status Output

[time e.less]

I've searched the MySQL user's mailing list, the web, and this forum, but can't find any page that gives a simple explanation of the various numbers output by "show innodb status". I'm really interested in a page like this one:

http://dev.mysql.com/doc/refman/4.1/en/server-status-variables.html

The reason, and I think the users of this list will be interested, is that I've created Cacti graphs for the output here:

http://www.faemalia.net/mysqlUtils/
(there is a thread about it on the Cacti forums, here):
http://forums.cacti.net/viewtopic.php?t=11010

Now that I have graphs of the InnoDB stats of my database cluster, I'm starting to wonder if what I see is expected and normal, or if what I'm seeing indicates stress for my servers.