Think I mentioned it before in this thread, but I haven't been able to get the paperclip icon to work, I think that is a combination of my browser combined with some of my various protection problems. Since I can do what I need by the manage attachments button, I've stopped trying to figure it out, but sometimes it would be nice to embed a diagram in the text.
It seems cumbersome, but once you get the image imbedded into the text, can you then edit out the thumbnail attachment?
You'd have to do it all at the same time because of the short time allowed for editing (and there are good reasons for that too).