Thanks, Bob, for chasing this down.

I guess I sometimes start a response to a posting and then go off to do more "research" about it, or I'm composing an extended response. I have learned (except when I forget that I have learned) to use Notepad to build those long responses, and then copy them into a new reply. I also will build a message or reply (this forum app doesn't seem to mind inserting and editing text forever, even after a long time) and then copy it out to Notepad before hitting the post button. The restore button does work (now that I know what to look for).