documentation

/ˌdɑkjəmɛnˈteɪʃən/
noun
  1. Official documents, instructions, or written information that explains something or provides evidence.
    • The project manager asked for documentation of every expense.
    • Please read the software documentation before installing the program.
    • The traveler carried all the necessary documentation for the visa application.
  2. The process of recording information in documents.
    • Proper documentation of medical records is required by law.
    • The team is responsible for the documentation of all research findings.
    • Good documentation helps future engineers understand the design decisions.