Oh, thank you all!
I'm not sure there is really such a thing called "four needle bind off". The name just seemed to describe what I did.
Today I would probably call it "a four needle bind off with a twist".
I can make a photo tutorial for you, but it may take a while, since I'm in the midst of studying for some exams (or trying to do so
) and shouldn't really be knitting at all... (Well the second pillow is already on the needles
Anyways, I write a sort of an explanation what I did, and I hope it helps you in the meantime. If you are already familiar with the three needle bind off, this is just a version of it.
I'm sorry, but I don't know the cabling lingo, so I'm just trying to write something remotely understandable...
The point is to make it look like the last cable twist happens in the binding edge.
When you have knitted all the rows between your last "normal" cable twist and where you want to bind off, this is what you do:
If you have a cable 8 sts wide (Twisted 4 and 4 sts), you take the first 4 sts to a cable needle and bring them in front of your work and take the 4 next sts behind them (in the needle they already are). After that you take the back piece (The back of the pillow or what ever you are making) stitches (4 sts) along behind the two needles you already have in your left hand.
Now you bind off 3 stitches from three needles at the same time, just about the same way as in the three needle bind off, except you have three needles in left hand and one in right.
Between the cables, where you have your purl stitches, you just use the three needle bind off.
You can use this to make right turning cables also just by changing the needles places.
I'm sorry, this explanation is a total mess!!
I think I'll have to make that photo tut quite soon.
And if someone knows a right term for this method, I'd really like to hear what it is