I call it "FourDay" (4D) because version 1.0 took four days to write. I was hoping for three days, but as it turned out I could barely do it in four. Like most things, I blame it on Windows. It can handle most standard expressions such as y=m*x+b and sin (pi/3). Please note that you must specify the multiply OperaTor explictly; for example, a*x**3 means "a times x Cubed"
