x^a_b x_b^a \min_A \max_B \det_C \Pr_A \gcd_A
 \dot{u}^2 \overline{u}_\varepsilon \underline{u}^a_b
 \overbrace{a+b}^{\text{term}} \overbracket{a+b}^{c}
 \underbrace{a+b}_{c} \underbracket{a+b}_{c}