Total radiative acceleration and its contributions from continuum processes and line transitions. Decomposition of the total radiative acceleration (solid black) into continuum (dashed green) and line (dashed red) components along with individual contributions from constituent elements in the atmosphere (coloured lines with symbols, see legend). Each of these element contributions consists of the sum of their line and continuum accelerations. All accelerations are normalised to gravity. The dotted and dashed vertical grey lines mark the sonic and critical points, R_sonic and R_crit, respectively. The model stellar parameters are log(L_*/L_⊙) = 6.0, M_* = 105 M_⊙, T_* = 35kK, X = 0.7, and Z = 0.02.