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There seems to be an issue with line nomenclature. I wrote the article in complete consistency with the source I found, a quite comprehensive one. If the terminology is not correct, please find a source which shows this.  —  superbfc [  talk |  cont ] — 11:04, 8 July 2007 (UTC)

"Railway Track Diagrams - 5. England South and London Underground" Second Edition, published by the Quail Map Company. ISBN: 1 898319 52 9. Signalhead 20:17, 8 July 2007 (UTC) reply

Thanks. Please, next time, provide the source into the article when you make edits, and not just when requested. See WP:V. I appreciate you're new, but Wikipedia needs sources. I spent a long time on that article, and I don't mind other people editing it, but sources are very important. Thanks, though, for finding a source.  —  superbfc [  talk |  cont ] — 01:12, 9 July 2007 (UTC)