Or not, as it turns out.
In the good old days, when security wasn’t so much in one’s mind, it was fairly simple to place a button on a webpage, have the user click it and expect some text to go on the clipboard. These days however, this isn’t the case, for any browsers except IE, where it is extremely simply. In some other modern browsers you can work around it by changing the config settings, which I doubt anyone has done, so we cannot rely on it.
So we can add a button for IE users that will work and a copy’n’paste area for everybody else, or just add the c’n’p area for consistency. Not sure what is best, but I’ll start with only the latter…