The lyrics were written by the August Heinrich Hoffmann von Fallersleben on the island of Heligoland (North Sea) in 1841. The music was composed by Joseph Haydn in 1796 and was used for the Austrian...
"Bedienungsanleitung" is the word you are looking for.
Literally fiber therapy would be Ballaststoff-Therapie. In Germany a doctor might recommend ballaststoffreiche Ernährung (fiber-rich nutrition).
A diagnosis is a reason for a malady, and a therapy is a plan to mitigate that malady.
JS Bach