What was the Plankalkul 1945 used for?

Plankalkül, developed by Konrad Zuse in 1945, was one of the first high-level programming languages. It was designed for programming computers to perform a variety of tasks, particularly in engineering and scientific computations. Its features included data structures, control structures, and a focus on formal language design, laying the groundwork for future programming languages. However, it remained largely theoretical and was not widely used during its time.