As @scottF has posted before, it is useful if forum users mark solutions because this helps us see what has already been solved, and also helps people get directly to the solution if they have the same or similar question.
It takes time each time to write out a message asking users to mark the solution, and also it feels a bit like you are trying to get recognition, but if everybody tried to encourage users to mark the solutions, the forum would be a tidier place and @scottF could probably have a day off 
So I decided to copy the message as an image so it can just be dropped into a post, and (so I don’t feel like I’m going it alone and seeking “ticks”), I would like to encourage you to make use of this too.
Now there is no point clogging up the forum’s cloud storage with multiple images of the same thing, and I believe that the way the forum works is that once an image is uploaded, it remains available with a unique reference, so I’ve saved this line of text in an editor that I can just copy/paste from.
I’ve also saved this post as a “bookmark” in my forum profile, so I can find it easily in future.
I’ve done it this way because the message itself also includes images and it felt “simpler”. You may disagree, lol.
Being displayed as a slightly reduced size image, it also shows up differently from the remainder of the text that is written, so it stands out.
Next time a user thanks you for solving their problem, along with telling them that they are welcome, paste the above line into your post. It should drop in the following image:
well… that’s they theory anyway. Of course alternatively you could just copy/paste some text. The choice is yours
Happy solving! 
For that and the thousands of other times you helped users on threads, we salute you! 