The Rules category lets you change the rules of the game: e.g., the number of rounds, the use of extra tiles, claiming rules, etc. The options on other than the introductory page (which lets you customize the rule descriptions displayed on the upper part of the Rules tab) are saved in the rule presets and can be edited only when a user-defined or customized rule preset is activated and there is no game in progress. The category consists of an introductory page and four option pages:

Related topics:
Creating and managing custom rule presets
Preferences – Overview
Preferences – User Interface
Preferences – Players
Preferences – Scoring