I have seen people get to happen. The response to a command will disappear after a while. Can anyone tell me how? Can you do it selectively so some text disappears, some does not?

You can remove text with Javascript or do it with Quest commands:

   <start type="script">
      	newsection=StartNewOutputSection ()
        msg("This is a new section")
        EndOutputSection(newsection)
        wait {
             HideOutputSection(newsection)
             msg("Now it's gone")
        }	
    </start>

Thanks.

By the way, none of these methods seem to be in the Quest documentation:

StartNewOutputSection
EndOutputSection
HideOutputSection