[mistersquid]

I'd never heard of using hjkl for cardinal directional movement.

I am familiar with ijkl where jl <—> W E and ik <—> N S (used in Lode Runner and BurgerTime for the Apple IIe).

I honestly don't know: is hjkl standard in a command line app?

[bdhess]

Yeah, in vi: http://www.catonmat.net/blog/why-vim-uses-hjkl-as-arrow-keys...

[marssaxman]

Only for vi users. Everybody else thinks they're weird.

[jplahn]

It's the standard in vim.