Theodore Verweyen contributes an essay in which he compares examples of Baroque figurative poetry to examples of modern concrete poetry. Eugen Gomringer writes an essay that compares examples of modern German concrete poetry to examples from poets in other countries. -- Source of annotation: Marvin or Ruth Sackner.

The poems combine German, Portuguese and English words and phrases layed out in geometrical shapes. There is an image of an ancient astronomic instrument, called Astrolabium from 1480, on the cover that recurs as fragments throughout the book and in its full form at the end of the book along with documentation in German. -- Source of annotation: Marvin or Ruth Sackner.