This is a useless POS. The program might work  I'll never know because the documentation is appalling. If you already know the function names you can use the example function to discover the syntax. And if you don't  you can't. You can spend an hour or two trying to guess how to plot the graph of y=x^2 between -1 and +1 and get absolutely nowhere. Nothing in the manual gives you a clue. Like most free downloads  it's written by  and for  enthusiasts who are functionally illiterate in English and incapable of explaining anything.
March 19 2017