... code is included as freeware.
Version 3.2 Jan 28 2024
1) Increased the length of plotting equations from 255 characters to unlimited
2) Added several new example surfaces
Version 3.1 - Nov 6, 2022
1) Bug fix for minus sign in equations
2) Added Range Variables used in equations
3) Added Color Scheme Dialog
4) Added many more example surfaces
Youtube Video:
https://www.youtube.com/watch?v=M2CIKArUhys
Downloading Problems:
See the Wiki if having download problems.