I was able to use tools that allowed me to make changes as needed without having to rely on a computer with a lot of memory or processing power. It did not have a great interface, but it was easy to get used to. If you are needing to make changes in your model, this software is perfect. It can be used just about anywhere because of its portability. It can be used anywhere at anytime. It's really the best software available out there, especially if you're having problems with your computerβ¦