UTC  If there is one thing worse than a knowitall its a smug knowitall  Unfortunately you are wrong yet again  I may have been deleted from the first place it was put but it is allive and well where it ended up just checked  still there  And the diffs are where I put them as well  The subsequent email discussion shows it was taken seriously  Basically your card has been marked  I never expected Wikipedia admin to do anything much as they never usually do  At least you are self confessed knowitall since you stated publically that you delete material where it conflicts with you own knowledge with of course the classic hallmark of the knowitall  the anonuymous reference book  In my experience and I have no doubt that is considerably greater than yours knowitalls rarely know very much about anything    Oh and by the way the book Railway Signalling on British Railways by Richard Knedham AFIRSE Thats Associate Fellow of the Institute of Railway Signalling Engineers to you  and thus I am certain more highly qualified than an anorak such as youreslf says that you are wrong yet again about the tokenless block which incidentally was not my edit  He states that the tokenless block has become a generic term for any single track system where the driver does not take possession of a physical token  Oh and your sockpuppetry allegation got treated with the contempt that it deserved  not helped when you tried to claim evidence that was actually supplied by yourself   Your attitude to others betrays your obvious immaturity   Thats not incivility  its blatantly obvious fact     December