i have found this license file:
All graphics and documentation of Fritzing are licensed under
Creative Commons Attribution-ShareALike 3.0 Unported.
See http://creativecommons.org/licenses/by-sa/3.0/ for the full description.
This means that you may publish circuits and diagrams that you create with
Fritzing and that use these graphics – as long as you credit us, and
publish your works under the same license.
A credit can be as simple as “this image was created with Fritzing.”
so if iam interpreting this right i am not allowed to embed a image of for example the breadboard view in an closed source document?!
thanks for clarifying this