# Memos Memos is the note-taking domain centered on short-form memos and the resources attached to them. ## Language **Memo ID**: The stable internal identity of a memo. It does not change when a memo's public identifier changes. _Avoid_: Memo UID, slug **Memo UID**: The unique public identifier used in a memo resource name and URL. It may be user-defined when the memo is created or generated automatically. _Avoid_: Memo ID, database ID **Memo resource name**: The API identity of a memo in the form `memos/{memo UID}`. _Avoid_: Memo ID, content ID **Memo reaction**: A response attached to exactly one memo. Reactions are not a generic mechanism for targeting other kinds of content. _Avoid_: Content reaction, generic reaction, reaction target