What is Rheo?

The simple answer is that Rheo (ree-oh) is a new and more flexible way to produce and publish digital documents. The less simple answer is that Rheo is a typesetting and static site engine based on <u>Typst</u>. This guide explains both how to use Rheo, and why it might be for you.

Rheo allows you to produce a website, a fixed-size document, and an adaptive document from a single set of source Typst files. It allows you to do something similar to <u>LaTeX</u>—except that Typst is much simpler to write, and we can produce a greater number of formats with it. The documentation that you are reading now, for example, was typeset with Rheo. As a result, you can read it as:

• <u>HTML</u> - as a website for browsers.
• <u>PDF</u> - as a fixed-size document for printing.
• <u>EPUB</u> - as an adaptive document for e-readers.