@User: It's a bit of a quandary, with the selections. If I do "see no m4" I won't see metal4; but then I can still do "select area m4" and get m4 in the selection, and an outline of m4 in the selection is shown. This is preferred, as it is bad form to be able to select stuff and then move or copy it around and not know it because you can't see it. This applies to labels, too. Not sure of a good way to hide labels and avoid the problem of copying or moving labels that you can't see.