Dimensionless parameters quantifying the role of short-range forces for a triple system with an arbitrary tertiary mass (m₃) and outer orbital period (P_out). The system includes an inner circular binary with masses m₁=m₂ = 55 M_⊙ and an orbital period of 1.1 d, at a metallicity of Z = 0.00042, evaluated at the ZAMS. We use different colours to highlight various regions of interest. Dark grey indicates dynamically unstable triples. We display the relative strength of the apsidal advance due to GR (ϵ_GR, top panel) and the relative strength of the apsidal advance due to tides (ϵ_Tide, bottom panel). For a direct comparison, we select an identical scale for the colourbars.