"Directional" chain

Pituophis Posts: 1,025
edited January 2013 in Workshop
If you don't know, you have to ask :oops:

I have just bought all new Shimano 105 running gear from Ribble, to upgrade my bike.
No problems fitting any of the components, but the chain is described as a "directional design" in the write up.
So, here goes; does that mean it has to go on in a specific direction? :oops: :oops: :oops:

If I'm not an idiot, how do I know which way is correct? (It came in a plastic bag!)

Cheers. :?