Two-dimensional distributions (WCI,RBI) that result from microlensing of the BLR models by the diamond-shaped (κ = 0,γ = 0.5) Chang-Refsdal caustic. Models in which the emission line emerges at small (1 ≤ r_in/r_s < 2), large (2 ≤ r_in/r_s < 5), and much larger (r_in/r_s ≥ 5) radial distances from the accretion disk are examined separately. The simulations are further divided into several intervals of continuum magnification μ^cont and relative BLR magnification, μ^BLR, expressed in units of μ^cont; these quantities are specified at the end of each row. The KD model, seen at 22°, 44°, and 62°, is plotted with shades of blue; the EW model, seen at the same viewing angles, is plotted with shades of green; and the PW model, seen at 34°, 44°, and 62°, is plotted in shades of orange and red. The empty squares translate the inability of extended BLR models (r_in/r_s ≥ 5) to reproduce large-amplitude magnifications of both the continuum and emission line.