Craftland.org

I had the idea of having bridges that you could change the width of. A normal bridge is 3xwhatever, but if people could make 1xwhatever ones, that would add flexibility in the creation of redstone machines, lava grinders, and general use. Someone could type something like [Bridge] on a sign, and presto, making stuff just got 30x easier. Just an idea.
[1]

like put the value of width in the third line, except it needs to be odd number

yep