[9fans] tab completion and command history in rc

[Rian Hunter <rian@MIT.EDU>]

Hi,

I'm very very new to Plan 9 and I'm very conscious of the fact that  
things are done differently if not better than in the unix family. In  
bash and in some versions of csh and sh there is tab-completion and  
command history (you get these effects by pressing tab or up,  
respectively, on the keyboard). Does that exist in rc, or is it done  
in different way in Plan 9?

Also on my keyboard my directional buttons no longer work, so in a  
terminal window running in rio it's very frustrating when I get to  
the bottom of the window and have to use the mouse to scroll down or  
press enter twice. Is there a way so that the command line always  
stays in sight in the terminal window? or, are there other key  
sequences I can use to simulate up down left and right (similar to  
hjkl in vi or ctrl+n or ctrl+p in emacs/bash).

Thanks!

Rian Hunter