Farnoosh Brock’s excellent instructional mind map on career mistakes to avoid “breaks” several rules of mind mapping, but that’s OK. It communicates a mini-lesson very effectively.
How to use callouts to make your mind maps easier to understand
Callouts are comments that can be attached to mind map topics, and they can be used to add brief notes, instructions or to add context to them. In this role, they help to make your mind maps easier for others to understand.