Top: Light curve of the Ca XIX w line intensity in early phases of flare evolution (case A). The vertical dotted lines mark when each phase starts. Bottom: Line profiles at 31 and 66 s for different loop orientations. The dot‐dashed line, dashed line, and thin solid line correspond to directly heated (I_heat), evaporated (I_evp), and accumulated (I_acm) plasma components, respectively. The thick solid line is the sum of these components. Note the various vertical scales for the profiles at 31 and 66 s.