Just noticed a bunch fo apparently auto-calculated +*geocode cards on http://thefarmschool.wagn.org/recent

I assume the idea is to use them to generatemaps, is there any tricky aspect to this, or will it be pretty obvious if I go look at some Google maps documentation?

Also, is this documented here anywhere (and if not is it okay to go ahead and do so), and is it part of core Wagn or is it a Pack?