Forum jargon, rules say: "Green tick – This is used to indicate that a subject has been satisfactorily resolved, and can only be placed on a thread by the person who starts it. You’ll find the button that does this at the end of your thread"
I feel the above is not clear enough and would be better worded something like:
"click on one of the big grey ticks at the right of any post and it will turn green. When page is refreshed the Thread will be marked Resolved"
The advice from the 'Revised' rules on the Green Tick is totally wrong,as the ability or button to change the grey tick to green appears at the side of every post and certainly not at the end of the thread.