Default signature
Suddenly my signature is not appearing in a new mail message. Each time I now must select one of my 4 signatures. How do I make one of these my default signature that will appear on every new mail message unless I replace it with another signature. This was work OK for a longtime but something changed recently and I have no signature on a new mail message until I select one.
iMac, OS X Mountain Lion, MacBook Air, IPad v1, Apple TV v2