Regions in the e−log P diagram where WRLOF is active. If the initial period P_i of a system lies to the left of the curve, a binary undergoes WRLOF during the RGB (orange dashed line), the AGB (solid blue line), or the AGB with C-rich dust (i.e. T_dust = 1500 K, green short-dashed line). Top and bottom panels refer to 1.2 + 0.8  M_⊙ and 2.0 + 1.0  M_⊙ binaries, respectively. The orange dashed curve and solid blue curve are computed using T_dust = 1000 K (i.e. O-rich dust).