Correct names Mathcad and Mathcad Prime are Mathcad and Mathcad Jr.
There are a Father and a Son.
The Fatheris muchmore experienced thanhis Son, but the Fatherhada careercoming to an end.
The Soncan not yetdo muchof whathis fathercould do.
But the songradually fromperenemaetexperience of his fatherand learnsa lotwhat you do notknowthe father.
Yetthere isthe illegitimate son- SMath.