Portions of the Lick/APF spectrum of HD 2796 (shown as blue filled circles) near the lines of Eu II at 4129 Å (top left), Ba II at 6141 Å (top right), Sr II at 4077 Å (bottom left), and Zr II at 4161 Å (bottom right). Best-fit synthetic spectra are also shown (yellow solid line), together with abundance variations (magenta dashed line and cyan dashed–dotted line) of ±0.1 dex (for Eu), ±0.1 dex (for Ba), ±0.3 dex (for Sr), and ±0.5 dex (for Zr).