wrote in message
oups.com...


If there was room on the diagrams, you'd need


3) a kind of link for walkable changes involving the exit (eg Bank -
Cannon Street [actually nearer than Monument], Great Portland Street -
Regents Park, Euston - Euston Square)


Someone has tried this, see this and others at

http://www.geofftech.co.uk/tube/sillymaps/walkmap.gif

http://www.geofftech.co.uk/tube/sillymaps

Paul