If you have not marked the board you will see abo
Post# of 36537
you will see above a click-on that says
"Board Mark"
Also at the top of the page there is a link that
shows what boards you have marked -where
you can take back your board marks should you want to.
It is a courtesy showing interest and or appreciation of some kind.
It is the same as a person mark on your profile.
Where you have zero person marks
This board currently has 74 board marks which shows above (inc mine)