Hi there, Quarto team! 

When working in a Quarto book, is it possible right now to have a "chapter" hyperlink to a different website? Specifically, I'm thinking about how Bookdown uses specific code in the [bookdown::gitbook:](https://github.com/dgrtwo/tidy-text-mining/blob/master/_output.yml) section of the `_output.yml` file (code linked) to create the "View book source" link on the [Tidy Text Mining](tidytextmining.com) site. 

I'm trying to convert my team's training manual from a bookdown to a quarto book, and I've been racking my brain trying to figure this out to link to our extra reference manual from the main training document. I feel like I keep just barely skirting around the solution, but I just can't seem to put things together 😅  I know I can get creative and just make the document a website rather than a book and get things to work that way, but I'm curious if there's a current way to make this work from a book, specifically. 

Apologies if this already been asked, I've perused all the discussions and issues, but still could have missed it! Thanks!

2022-08-18T20:22:17Z
dvirlar2
Future
open
Hyperlink to external website from book sidebar
https://github.com/quarto-dev/quarto-cli/issues/1973