Thanks. I was trying to edit it and the entire message disappeared. I went back, the message reappeared, so I made my change and, as there was no ‘‘save changes’’ option, all I could do was resubmit it. Then I couldn’t find any way to delete the first one, which was somehow still there.
I’ve seen these fora work for other sites, but it doesn’t work here very well, I’m afraid. Ordinarily, when you preview a message, the message is still there, so you can edit it. Here, it just vanishes and has to be retyped.