That is just what I needed! thanks alex

On Sat, Aug 26, 2017 at 12:32 AM, Alexander Burger <a...@software-lab.de>
wrote:

> Hi Bruno,
>
> > I'm writing a script that shows a person a math expression (like "2 + 3")
> > waits for an answer, then returns if its right or wrong.
> > What I want though, is for it to wait something like 3 seconds and, if
> > there is no input, assume the user doesn't know and return "WRONG".
>
> The easiest is if you just wait for the next key stroke:
>
>    (key 3000)
>
> this returns the key if one was pressed, otherwise NIL.
>
>
> To wait for a full line of input, you could use 'abort':
>
>    (abort 3 (line T))
>
> This also returns the line, or NIL if timed out.
>
> ♪♫ Alex
>
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