Then why don’t you use what has been established as an acceptable method of marking a thread instead of posting an exact duplicate irrelevant comment on multiple threads?
The usual ones are:
BTT or BTTT (Back To Top or Back To The Top), BKMK (Bookmark), MFL or Mark For Later, Ping (to someone to bring their attention to the thread) or Ping To Self (to yourself) or Ping For Later...
Just to name a few.
Or you could try a more understandable comment such as “Reference mark” or even “Mark for later reference”.
Just a few thoughts, and thank you for your contribution.
All good suggestions, but none of these would irritate a Lib lurker.