Standard Rules by Graham Nelson
The Standard Rules, included in every project, define the basic framework of kinds, actions and phrases which make Inform what it is.
Unlike other extensions, the Standard Rules are compulsorily included with every project. They define the phrases, kinds and relations which are basic to Inform, and which are described throughout the documentation.
Do the Standard Rules have a license? Every published Inform 7 game includes them, right?
I presume that Inform authors have no explicit legal right to publish games including Graham’s copyrighted material, but we all just assume (justifiably!) that Graham has no intention to sue anyone who publishes work that include the Standard Rules…?
(Maybe the Standard Rules will become available under an open source license if/when Inform itself does, some day.)