Typerighter uses an extended ruleset but the core is based on the Guardian's publically available style guide: https://www.theguardian.com/guardian-observer-sty

Typerighter uses an extended ruleset but the core is based on the Guardian's publically available style guide: https://www.theguardian.com/guardian-observer-style-guide-a https://www.theguardian.com/guardian-observer-style-guide-a