Speed Grader Orange Dots

Community Explorer

I'm new to Canvas, and I cannot figure out what the orange dot means next to each student's name in the upper-right dropdown menu in Speed Grader. I though it was used to indicate that the student had submitted work, but that doesn't seem to be the case.

I have 2 sections of the same class. Only a small handful of students have submitted their final projects so far. For one section, ALL the students have orange dots next to their names (yet, only 3 of the 12 have submitted anything). For the other section, only the 4 students who have submitted documents have orange dots next to them. So, now I can't figure out what it means!

Can someone explain the meaning of the orange dot for me? Thanks!