Could not care less about the form manuals come in (CD, Film, hard copy) as long as the equipment is available to read them in good quality.
I do care that the appropriate information is easily obtained though. Sometimes you think these schematics were done by someone fresh out of University, who would not know the front from back of an aircraft.
Now, those Airbus wiring diagrams............what a pain to read!!
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When all else fails, read the manual!