aide-mé·moire 
(ād′mām-wär, ĕd-)
(ād′mām-wär, ĕd-)n. pl. aide-mémoire or aide-mémoires
1. A memorandum setting forth the major points of a proposed discussion or agreement, used especially in diplomatic communications.
2. Something, such as a mnemonic device, that serves as an aid to memory.
[French : aide, aid + mémoire, memory.]