Off for a good start, now in color.
Still trying to establish some kind of stable routine, which would bring a bit (only a bit) of responsibility but without hoops to jump through.
There used to be a way to type formulas on Blogger, cannot remember for the life of me. Okay, it seems that escaped parentheses work \( x^2 + y^2 \in \mathbb{S} \). I guess, I'm good to go.