# System Reference Document

> set or subset of role-playing mechanics available under an open license

**Wikidata**: [Q1091693](https://www.wikidata.org/wiki/Q1091693)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/System_Reference_Document)  
**Source**: https://4ort.xyz/entity/system-reference-document


## References

1. Freebase Data Dumps. 2013