This is a system whiich shows all members that posted in a particular thread (including oneself) and all posts made by that member. Follow this simple tutorial to see how to achieve this list.
Click the # of replies which is displayed to the right of the thread. See the red dot in the image below, the number is to the dot's left. Once the number is clicked, a page will pop up.
Once the number is clicked, a page will pop up. By clicking the username (it's beside the purple dot), you get directed to that person's profile. By clicking the number to the right of the orange dot, you see all 11 posts made by that person.
Note: By holding Ctrl and pressing F, a search bar pops up. You can insert the username of someone here to see if they have posted in the thread. See the location of the green dot.
Made by Drizzeh.