Software License Information

… Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands as a successor of a language called ABC. Guido … are dual licensed under the PSF License Version 2 and the Zero-Clause BSD license. Some software incorporated into … PSF and Licensee. This License Agreement does not grant permission to use PSF trademarks or trade name in a trademark …

https://www.mhi.com/products/energy/pdf/software-License-Information.pdf