Alas, the Continue button was just text, just as the tick box to not show me
this help screen again was not there. This means I'll have to re-enable HTML
mail, and wait for the next signed mail to arrive.....to turn it off. I
wonder what will happen to messages that have been tampered with when I have
turned off HTML mail? I will probably get a warning, but will not be able to
go beyond that, since it is in ASCII and that does not (AFAIK) support nice
buttons. So in order to enable signed mail, I will have to enable HTML in my
mail....