// Various special / math symbols, matching LaTeX names. :sym1: ✓ :sym2: † :times: × :plus: + :geq: ≥ :leq: ≤ :neq: ≠ :leftarrow: ← :uparrow: ← :rightarrow: → :downarrow: ↓ :elem: ∈ :lnot: ¬ :land: ∧ :lor: ∨ :oplus: ⊕ :alpha: α :beta: β :gamma: γ :DeltaUpper: Δ :delta: δ :epsilon: ε :lambda: λ :rho: ρ :tau: τ :lceil: ⌈ :rceil: ⌉ :lfloor: ⌊ :rfloor: ⌋ :vert: | :partial: ∂ :onehalf: ½ :onequarter: ¼