Historical clue formulations

• "In case it's of interest ...," in brief — 2026-03-16
• "Just so u know ..." — 2025-05-16
• "Just a heads-up …" — 2024-11-23
• "Just a heads-up …" — 2024-03-18
• Memo starter — 2023-07-26
• Post-it note abbr. — 2023-05-31
• Memo opener, often — 2022-07-24
• Letters accompanying a tip — 2022-02-23
• "In case it's of interest ..." — 2021-05-20
• "Here's something interesting," in brief — 2018-12-10
• "By the way ..." — 2018-07-28
• Memo-heading inits. — 2018-07-23
• "This might be of interest," on a memo — 2018-07-16
• "In case it's of interest ..." — 2017-07-07
• BTW — 2017-01-29
• Inits. at the start of a memo — 2017-01-09
• "This might be of interest ...," for short — 2016-06-27
• Header on many a forwarded email — 2015-06-06
• "Just a heads-up," on a memo — 2014-11-10
• Memo-heading initials — 2014-04-02
• "In case it's of interest ...," on a memo — 2013-05-27
• Initials at the start of a memo — 2013-02-11
• Memo opener — 2011-11-05
• "This might be of interest," on a memo — 2010-09-02
• Post-it note abbr. — 2008-05-13
• Memo starter — 2006-07-06
• Just so you know — 2006-04-02
• Memo-opening letters — 2005-11-29
• Memo letters — 2005-10-17
• Memo letters — 1997-09-11
• Memo starter — 1997-01-19
• Message starter — 1996-11-03
• Post-it note abbr. — 1996-03-07
• Memo letters — 1995-08-24
• Memo letters — 1995-07-21
• "Read this" — 1994-08-26