From India, Hyderabad

You could have checked this forum before raising this query. Anyway click the following link to read my reply:
https://www.citehr.com/224575-differ...ar-notice.html
"Notes" are used for internal communication in general. For example, when some proposal is received from vendor, finance head write 'Note' on this proposal. Notes are also referred as "Internal Office Memo" or "Internal Office Communication".
Ok...
Dinesh V Divekar
From India, Bangalore