Are you tired of copy-paste sessions?
Download the Sauerbraten Library Module. Create one master object. Link the master through pasting it over the map. Change the master and apply the changes to all linked objects. Save and load the library parallel to your map. For more information see the Wiki You will love it, too.
Get it now
Or git clone it
$ git clone git://github.com/wrack/sauerbraten
$ cd sauerbraten/
$ git checkout library
$ cd sauerbraten/
$ git checkout library