Can you rebind the 'next menu element' key in Eclipse?

I use eclipse and when I do code completion, I'd really like to开发者_运维知识库 keep my hands on the home row and push "CTRL-N" for the next code completion suggestion, and "CTRL-P" for the previous one. I'm not seeing anything that looks like what I need in the Preferences > General > Keys menu. Anyone have any ideas?

As said in the comment above:

I figured out from that that the bindings I wanted were "Line Up" and "Line Down".