I wish I could do the London tube but it’s cyclic. Even for Amsterdam, route 50 was a bit of a kludge as you’ll see in the tree. Here’s an image with tag/branc

I wish I could do the London tube but it’s cyclic. Even for Amsterdam, route 50 was a bit of a kludge as you’ll see in the tree. Here’s an image with tag/branch names for the lines: http://i.imgur.com/vXhLYry.png http://i.imgur.com/vXhLYry.png