Hi,
MapSource shows as copyright information the following lines:

Map created with mkgmap-r2220     
Map data licenced under Creative Commons Attribution ShareAlike 2.0 OpenStreetMap and contributors
Program released under the GPL
http://creativecommons.org/licenses/by-sa/2.0/
www.openstreetmap.org

In near future OSM will change the licence, so I think Garmin-maps could also released with other licences than cc-by-sa.
So it would be great to chage these lines to a fix part

Map created with mkgmap-r2220     
Program released under the GPL

and a variable part for the licence of the map and licence information of the input. this could be done in a txt-file. If there is no txt-file, there should be a default.

Henning