Fwd: Open Source EPUB CFI implementation update

> Begin forwarded message:
> 
> From: Lars Wallin <lars@colibrio.com>
> Subject: Open Source EPUB CFI implementation update
> Date: July 14, 2026 at 4:45:49 PM EDT
> To: public-accessible-syncmedia-pub@w3.org, W3C Publishing Community Group <public-publishingcg@w3.org>
> Resent-From: public-publishingcg@w3.org
> 
> Hi all 👋
> 
> A couple of weeks ago we released an exciting new version of the Colibrio FOSS implementation of the EPUB CFI specification!
> 
> This version adds support for the Text Assertion feature. Text Assertions are very similar to the Web's Text Fragments and adds additional resilience to CFI paths.
> 
> Here are links to the publicly hosted playground, as well as the Open Source Typescript library:
> 
> https://demo.colibrio.com/cfi-playground/index.html
> 
> https://bitbucket.org/colibrio/colibrio-web-epubcfi/src/main/
> 
> 
> Looking forward to hearing from you all, and feel free to contribute!
> 
> All the best from Lars and the Colibrio team 😊
>