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Sketch of an optimal general lawn SL,q with L = π/3, for a rational jump ϕ = (p/q)2π with p = 2 and q = 5 (a) and of an optimal antipodal lawn Sπ,q for a rational jump ϕ = π(p/q) with even numerator p = 2 and q = 5 (b). (Online version in colour.)
