The constellation is the simplest possible kind of configuration in poetry which has for its basic unit the word, it encloses a group of words as if it were drawing stars together to form a cluster.
The constellation is an arrangement, and at the same time a play-area of fixed dimensions.
The constellation is ordered by the poet. He determines the play-area, the field or force and suggests its possibilities. the reader, the new reader, grasps the idea of play, and joins in.
In the constellation something is brought into the world. It is a reality in itself and not a poem about something or other. The constellation is an invitation.
Gomringer, Eugen in Concrete Poetry: A World View. Ed. Solt, Mary Ellen. Bloomington, IN: Indiana University Press, 1968.