noun (n)

• confirmation that some fact or statement is true through the use of documentary evidence(noun.communication)

  Synonym:
  certification, corroboration
  

  source: wordnet30
• program listings or technical manuals describing the operation and use of programs(noun.communication)

  Synonym:
  software documentation
  

  source: wordnet30
• documentary validation(noun.act)

  Example:
  His documentation of the results was excellent.
  

  Synonym:
  support
  

  source: wordnet30