The wall installations that have been a primary medium for Weiner since the 1970s consist solely of words in a nondescript lettering painted on walls. The lettering need not be done by the Weiner himself, as long as the sign painter complies with the instructions dictated by the artist. Although this body of work focuses on the potential for language to serve as an art form, the subjects of his epigrammatic statements are often materials, or a physical action or process, as exemplified by such works as ONE QUART GREEN EXTERIOR INDUSTRIAL ENAMEL THROWN ON A BRICK WALL (1968) or EARTH TO EARTH ASHES TO ASHES DUST TO DUST (1970). In others, the subject involves a translation from one language to another or an encounter with a national boundary, as in THE JOINING OF FRANCE GERMANY AND SWITZERLAND BY ROPE (1969). In the succeeding decades, Weiner explored the interaction of punctuation, shapes, and color to serve as inflections of meaning for his texts. In 1997, he created Homeport, an interactive environment for the contemporary art web site Adaweb.com, in which visitors can explore a space defined by linguistic rather than geographic features.