Naming of thermal mass inconsistent
Most Rooms in the Building.HighOrder Library of AixLib offer a simple radio button to select the Thermal Mass Class. Unlike the whole GUI, the labels assigned (S, M, L) are abbreviations for the German "Schwer", "Mittel" and "Leicht". This is a possible source of confusion, as it could be misunderstood as "Small", "Medium" and "Large".
It suggest renaming the abbreviations to: S --> high M --> medium L --> low