I would suggest that the motivated reader should ignore Mendel’s Account and use SLiM instead. It requires coding skills, but it’s extremely flexible and unlike MA it is actively being developed, tested, and used by a large number of researchers. SLiM is also incredibly well documented.
See the following papers (each with more than 100 citations according to Google Scholar):
I had the priviledge of attending a 1 week workshop led by the main developer, Ben Haller, about a year ago. He’s super helpful and incredibly responsive to questions or problems.