nightly2.sakaiproject.org instance (still says 2.0.0)
The "Create a New Assessment" section of Tests&Quizzes help says (under Create a Question):
Note: The value you enter in the "Answer Point Value:" field will determine the point value for each response within a multiple correct question. If your question has two correct answers, entering 10 in the "Answer Point Value:" field will make each response worth 10 points and the entire question worth 20 points.
This is incorrect. Multiple choice multiple correct questions follow the same scoring rules as other types. If a question is worth 10 points and has two correct answers, each of those answers will be worth 5 points. FIB and matching questions are scored the same way.