We need a flow chart that describes how Tasks work. I believe it looks something like parse args->make butler->make Runner->runner.getTargetList()>runner.run()>Task.run(), but I'm sure there are steps I don't know about (and I certainly don't know which files some of the above are implemented in), and I don't know what arguments the base Task system expects at each step.
This has shades of RFC-352, but even before we deal calling run() or runDataRef() there are a bunch of relatively standard steps.
Story