>>>>> "Thomas" == Thomas Down <td2@sanger.ac.uk> writes: [...] Thomas> Is that heretical? As I see it, logic for doing this Thomas> would be: [...] I wasn't expecting the Spanish Inquistion! -- -= Keith James - kdj@sanger.ac.uk - http://www.sanger.ac.uk/Users/kdj =- Pathogen Sequencing Unit, Wellcome Trust Sanger Institute, Cambridge, UK