Today we have migrated the GRASS Wiki from http://grass.gdf-hannover.de/wiki/
to OSGeo infrastructure according to the migration plan [1].
All accounts are migrated as well, a Web redirect rule was added to the
old site to make the transition as smooth as possible. Users reaching the
old pages are automatically transported to the new pages.
Many thanks to GDF Hannover for hosting the Wiki for several years.
Thanks also to OSGeo-SAC/Telascience.org for their assistance.
Martin and Markus