This work is licensed under CC BY-SA 4.0

We are quite open and happy if the content is used as in many places as possible.

By this we still have some request for usage according the common creative license system:

This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. If you remix, adapt, or build upon the material, you must license the modified material under identical terms. CC BY-SA includes the following elements:

BY: credit must be given to the creator.
SA: Adaptations must be shared under the same terms.

For more detailed description please go to https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1