Top: build-up of synthetic Fe I lines at stellar disk center (μ = cosθ = 1.0) from a CO ⁵BOLD model of a dwarf star with approximate spectral type F7 V (T_eff = 6250 K, log 1 [cgs] = 4.5). Thin colored lines are spatial averages over the simulation area for each of 20 temporal snapshots; bold curves are the total averages. All five different line strengths are for λ = 620 nm, χ = 3 eV. The convection patterns especially cause the weaker lines to become asymmetric and wavelength-shifted. Bottom: evolution of the continuum intensity during the simulation sequence for four different center-to-limb positions μ = 1, 0.87, 0.59, 0.21. For off-center positions, slight differences exist among the four different azimuth angles (ψ = 0, π/2, π, 3π/2 rad).