Documentaries are much like lectures you can mind map them easily enough. The process of mind mapping adds a lot to your memory and you just look at the mind map to review it.
I'd be inclined to watch the documentary first before mind mapping it. And then do the mind map while watching it a second time. It helps to clue what is the important information and prepare me for what comes next (and I can pause if I want to draw something on the mind map)
The anchorman list is just an ABC list one that you will fall back onto when you need an ABC list for anchoring things.
You can have as many lists as you need or want for that. Vera Birkenbhil has heaps of lists. Some act as the anchorman list does for various memory webs and others are abc knowledge list. Which she has additional uses for. I understand she has a file box of knowledge list about many subject (including Star Trex Deep Space 9). The list are only limited by your imagination and if you have the list solid in your memory they can function as the Anchorman list in lieu of the Anchorman list.
Alex