Passing over (for the moment), PV1's observation. The reading medium is in this case is an old paperback copy, seventh edition 1980. But I also use a (again, ancient by relative terms) Kindle for downloading and reading books, storing simulator and other "how-tos", and varied info that would be too bulky to carry otherwise. It becomes as handy as the phone camera I used last week to remember how to re-wire a garage opener circuit board. -Instant reference for the re-placement of the blue wire.
