To aid the memory or help somebody call something to memory.
assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned
recall knowledge from memory; have a recollection: "I can't remember saying any such thing"; "I can't think what her last name was"; "can you remember her phone number?" "Do you remember that he once loved you?"; "call up memories"
put in the mind of someone; "Remind me to call Mother"