Bingo. Yes, Deselect now becomes available and I can get rid of the (dotted lined) rectangle.
But now, how do I delete the rectangle that was on the screen I sent you? I cannot select it to delete it !!
Also, if I enter text then something else, and now want to amend the text again, how do I do it?
Sorry to be such a pain, but I must be missing something that is very fundamental.