> If you wish to earn a commercial benefit from your application and not release its source code, you must purchase the number of licenses you need for your development from Eiffel Software. After you purchase licenses, you are free to use and distribute your application the way you want (see the end user license agreement).

> If you select the Open Source license, you must release your development under an Open Source license for the benefit of the community at large.

So I'm still confused about the licensing. For the open source license, is a GPL runtime embedded in the compiled program or something?