Ah yes! That did the job. Thank you.
It's a matter of having a 'light' touch, I guess. I'd tapped all over the page earlier, but only succeeded in either making the page larger or in arriving at a new one.
Donna
If you want to open a .pdf in Dropbox you can but you can access all of your Dropbox files via Goodreader.
In addition, if you find a .PDf you can open it in Goodreader and then upload it into Dropbox from there.