PRECIS Framework and Unicode 13.0.0

Document Type Expired Internet-Draft (individual)
Author Takahiro Nemoto 
Last updated 2021-08-15 (latest revision 2021-02-11)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the changes between Unicode 6.3.0 and Unicode 13.0.0 in the context of PRECIS in the same way as draft-faltstrom- unicode12-00. Note that this document is an updated version of draft-nemoto-precis-unicode12-00. This document provides the information necessary to consider whether the PRECIS Framework can follow the Unicode standard's updates since Unicode 6.3.0. This document also describes the differences between the Derived Property Values of IDNA2008 and PRECIS for each version of Unicode.


Takahiro Nemoto (

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