Mathcad deciphering

Hi one and all,

Mathcad has the ability to find the physical property terms following calculations. What is the Mathcad selecting process of calculating several different physical properties and attach the proper dimension; e.g. of "sec" time? What is the selecting process of all the physical properties: meter, joule, g (acceleration), pressure (newton/area), amp, atm, Hz, F (Farad), ... any combination of properties and end up with the correct combination of physical dimensions added to the answer?

Colin C eagle1@eaglmall.com