  The definitions of replicable and completely replicable functions are
intimately related to the Hecke operators for the modular group. We define the
notions of "$(2+)$-replicable" and "completely $(2+)$-replicable" functions by
considering the Hecke operators for $\Gamma_0(2)^+$. We prove that the
McKay-Thompson series for $2\cdot\mathbb{B}$, as computed by H\"ohn, are
completely $(2+)$-replicable.
