All (from Figs. 2–5) long-term stable coplanar symmetric orbits. Emphasis is given toterrestrial planets of low eccentricity values and in case of multiple points on the grid with value log (DFLI) ≤ 2.5 only the one with the lowest value e₁ is coloured. Plotted in the background with solid grey lines are the 93 planetary systems possessing one giant of mass [1–5] m_J at a₂ ≥1.0 AU.