-[Two-Phase-Richards](./Two-Phase-Richards): domain decomposition examples using a flexible combination of the Richards and two-phase flow model.
-[Two-Phase-Two-Phase](./Two-Phase-Two-Phase): domain decomposition examples using only the two-phase flow model.
Each of the folders contains subfolders such as `one-patch`, `two-patch` and `multi-patch` holding domain decomposition examples featuriing one-patch, two-patch or multi-patch substructurings. This ordering has been introduced to
keep things tidy. You may introduce your own ordering, of course.
## How to create your own usecases
In order to create a new usecase, either modify one of the existing ones, or
copy one of the existing cases into a new file and start working on your own.
To understand how usecases are set up, let's have a look at the file
