Home sweet (temporary) home: “Postmadison” is a show from artists who have come and gone — or stayed

For many residents, the city of Madison is a waystation. A college town. A pleasurable stop to learn or live for several years on their way to other things and places. With this in mind, Postmadison was born, an exhibit at the Arts + Literature Laboratory (ALL) until April 6, featuring four artists who once called Madison home.