[Arjen Markus] (7 january 2023) The break during the holiday season allowed me to pick up an old project again: a way to define a bunch of calculations and have them run partly simultaneously and partly sequentially, so that you use the computing resources efficiently. The main steering program was complete and even documented, but I thought it would be nice to have some more supporting programs: * A program to prepare the input files based on a simple table * A program to report on the variations * Various modes for the first program that the reporting program should act upon Well, I was able to finish a lot of what I had in mind with the exception of the additional documentation. So, this page is mostly a placeholder :) at this moment. But I wanted to publish it now.