[CentOS] dirty screen

Jerry Geis wrote:
> Is there a command that marks the screen as "dirty" and hopefully
> redraws it?
>
> If I do a control ALT F1 and the F7 this in effect redraws the screen.
> I am getting video artifacts that I think is in the nvidia driver.
> the switching console works - I was just hoping there is a more
> convenient way.
> some command or something.

Where - the entire monitor, or just an xterm (in which case, <ctrl-L>)?

        mark