What is this near the bottom right corner (pic in details)?

Jun 7, 2017

Explanation:

Socratic is a place for learning, so when someone writes an answer, they do so to teach students.

However, that answer it still theirs, and so it still holds some license. These can be found in the other answer above.

Jun 8, 2017

Explanation:

$\textcolor{w h i t e}{a}$