Right. Sorry. I read stuff. (Even in the service manual.) And it makes
no sense to me. I move on in the hope that it will make sense in the
future.

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https://nobelcoaching.com/visual-or-verbal-learner/
"It is more effective for everyone to absorb information when it is
presented both visually and verbally, but what if the lectures consist of
speech only?"

Which is the problem we face when writing explanations in text-only r.c.m.

I'm by nature a visual learner and have difficulty reducing multidimensional
concepts to linear text, so I practice here. Scientists and engineers
explain things to each other by sketching and are nearly helpless when they
can't.

At a Mensa meeting the speaker dropped into a boring monotone and then
suddenly said ELEPHANT, and asked us what immediately came to mind. Everyone
but me reported either the word or an image. I was the only one who saw
both, a captioned color picture of an elephant pulling down a tree branch.