It’s pretty random. I can usually get it between some combination of CTRL+SHIFT+[ with some parts and CTRL+SHIFT+] with others. I think part of it may have to do with putting the breadboard itself in the very back and then locking it. I know I’ve done that, but I don’t know if that was a key to making it work or not.
Here’s a quick video of me doing the trick. http://www.youtube.com/watch?v=iVCV9WowBcs
The first time before recording the video, what I did was to select each LED and then DELETE followed by CTRL+Z. That didn’t work. So I just tried DELETE and CTRL+Z again. Still didn’t work. Then, with all the LEDs select, I did CTRL+SHIFT+], then DELETE, then CTRL+Z. And that worked.
But when I recorded this video, that pattern didn’t work, but some other pattern did. So there is no absolute sequence that I can figure out that works every time.
Which LED? I know I can reduce the size of the LED to 3mm, and I’ve seen some other LED that appears flat … and that would be great … but the one I’m thinking of takes up a 3x3 area (which is too big), and it isn’t the right size for going between a row and a power rail.
