TSShapeConstructor Relations

How exactly does Torque know what to do with the ShapeConstructor(PlayerDts) datablock found in data/shapes/player/player.cs file? PlayerDts is found nowhere else in the code or script, so how does it know what to do with this data?

Let's say I wanted to add a new player type, LightFemaleHumanArmor and I wanted it to have a different model, wouldn't I have to make another ShapeConstructor for it? If this is the case, why is the datablock given the name PlayerDts instead of, say, LightMaleHumanArmorDts?

Thanks for your help!