Definitions of artistic licence
(also: poetic licence) the freedom of artists or writers etc. to change the facts or events of the real world when producing art, especially in order to communicate meaning more clearly
I was using artistic licence to put a point across more clearly.
a licence for the use of open-source software that covers the distribution and sale of modified versions of that software
The "Artistic Licence". Preamble. The intent of this document is to state the conditions under which a Package may be copied, such that the Copyright Holder maintains some semblance of artistic control over the development of the package, while giving the users of the package the right to use and distribute the Package in a more-or-less customary fashion, plus the right to make reasonable modifications.