*UPDATE*
Just found this youtube explanation on this, starting at about 3:30.

https://m.youtube.com/watch?si=leESlt4T3-E1N9JV&v=XWk0XNe_Qws&feature=youtu.be

[Original Post]
Regarding the symbols that pop up above players presnap, ie corners, etc. I’ve been looking around and haven’t found a clear resource to explain these. I’m familiar with the Madden point system on the D-line but does anyone have a sound explanation for the others?