  The numerical effects of the known all-order leading and next-to-leading
logarithmic small-$x$ contributions to the anomalous dimensions and coefficient
functions of the unpolarized singlet evolution are discussed for the structure
functions $F_2^{ ep}(x,Q^2)$, $F_L^{ ep}(x,Q^2)$, and $F_2^{ e\gamma}(x,Q^2)$.
