Ahhh, thanks for the feedback. Sorry if the annoyance was too much, I am very grateful for the good work. I am. Really.
It seemed like a simple thing to work out, so I tried, but I really could not make any headway on my own. I was stupidly looking in the Table of Contents + under Book Browser, hoping for more info. I now located "open with" infos by using the search feature.... Just not what I expected. sorry again.
And thanks for pointing me in the right direction as far as PageEditor goes. I will see if I can figure it out now.