Where can I get a complete description of the android5 engineering menu?

Question

JavaScript

where to get a full description of the android5 engineering menu?
This means the official description of the meanings of each item in the engineering menu.
for example: "hardware testing - audio", "Others - SWLA".
for "hardware testing - audio" unofficial documentation is googled in RuNet,
but I'm interested in the full description and preferably the official one.

Answer 1

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