At that time, no scripting language is either simple to incoporated to my software and easy to use. After couple of days looking for such a kind of things in Internet, finally I decided to create one. There's nothing wrong with many script languages out there, such as Perl, Python, Tcl, etc. So I pick Basic as a language and build the interpreter. No, I don't have enough time for that.
Numerical variable holds floating-point value.
Argument is given in radian. Argument must be positive. Negative value is possible for step value. Yes, of course. Remember to put executable Cubix in your path.