[Therion] co-ordinate systems

I know that, at Andrew's request, you enabled OSGB to be recognised for the ST area. Is there any possibility of OSGB:SN being enabled as well, as I am about to start building a model of a cave in that part of South Wales. Graham --- graham.mullan@coly.org.uk 0117 9502556 or 07887 637064 (or try 0844 2327803)