>BTW in Bernard's situation (don't remember your code at the moment) I just noticed something.
>He does :
>bb = inkey(20, "H")
>if bb ...
>
>Well if user presses a key then no problem. But what would be the value of bb if user doesn't key for 20 secs. Since I don't see the other parts of code I assume it would be logical (just declaration of bb).

I don't see any problem. If key is not pressed during 20 seconds,
inkey() returns 0 and bb gets value of zero. So bb is always
numeric and can be compared with any number.