Related Clues:

• Had met before
• Was acquainted with
• Filed for future reference
• Appreciated
• Was privy to
• "Got it"
• ''I understand''
• "... Yorick! I __ him, Horatio": Hamlet
• Was certain
• ''I ___ it!''
• "Copy that"
• Made mention of
• Had no doubt
• Officially acknowledged
• "Understood"