[Thak2]

I don't like the windows pop up box ideas. Those would spoil the nice look of graal.

There should just be a command for adding clickable, customizable buttons to signs (these buttons would fit the sign colour scheme too).

maybe the code would be like:

say2 Are you interested in the offer?,button(yes),button(no),button(maybe later);
if (button(yes)==clicked) {
dostuff;
}