Examples of microlensed line profiles for different BLR models magnified by a (κ = 0,γ = 0.5) Chang-Refsdal caustic rotated by 0°, 30°, 45°, 60°, and 90°. The microlensed line profiles (in orange) are normalized to the surface of the non-microlensed line profile (in black). The corresponding values of WCI and RBI are indicated. Some BLR models (EW44°) cannot produce large red/blue asymmetries (RBI> 0.4).