'By the way' memo abbr

• Murphy Brown's show
• Letters at the top of an interoffice memo
• "Read this"
• "Oh, by the way ..." letters
• "This might be good to know," in texts
• Forwarded email header
• Just so you know
• Memo heading, maybe
• "By the way ..."

Wikipedia Word definitions in Wikipedia
FYI is a common abbreviation of " for your information ". "FYI" is commonly used in e-mail, instant as on messaging or memo and messages, typically in the message subject, to flag the message as an informational message, with the intent to communicate to ...