SYSPHS12 — Modelica Parameters for Subtraction row should indicate k2 required to achieve subtraction via Modelica.Blocks.Math.Add

In Table 11.3.2.5 Mathematical components in the Modelica Parameters column for the Subtraction row it should indicate k2 required to achieve subtraction via Modelica.Blocks.Math.Add (assuming that k1 for Modelica takes its default +1).

If k2 is intended to be negative it would help to indicate this constraint.