Related Clues:

• Bit of chat room shorthand
• 'Incidentally,' on IM
• Memo's 'by the way'
• Post-it note abbr.
• ''Thought you'd like to know'' letters
• "Oh, before I forget..." in Internet shorthand
• 'Oh, before I forget...' in Internet shorthand
• (Just so you know, the famous last notes of the "Simpsons" theme, if played in F major, run diagonally from this corner to the upper right)
• "This might interest you," in memos
• Letters denoting "so you know"
• Memo-opening abbr.
• Start of a text-message afterthought
• Interoffice letters
• Chat room afterthought letters
• 'Oh yeah ...,' in a text message