Your driver's license is documentation of your age, address, and that you have passed the tests required to drive a car. Documentation is certifiable proof, or a set of official documents.

Your new computer probably came with a packet of documentation that shows you how to use it and explains what to do when it breaks. In this sense, documentation means the official documents of your computer. If you are the person preparing a packet of information about how to use a computer program to keep attendance at school, you are preparing the documentation of that process.

Definitions of documentation

n confirmation that some fact or statement is true through the use of documentary evidence

certification, corroboration
Type of:
information that confirms or verifies

n documentary validation

“his documentation of the results was excellent”
Type of:
proof, substantiation, validation
the act of validating; finding or testing the truth of something

n program listings or technical manuals describing the operation and use of programs

software documentation
Type of:
computer software, package, software, software package, software program, software system
(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory

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