Reference

What the coeos theme styles.

The coeos format: the front matter it reads, what it styles, and the optional iconify dependency.

Using the format

format: coeos-revealjs

This theme has no options of its own. Everything is styled from the front matter Quarto already defines, and from RevealJS’s own options.

Front matter the theme lays out.
Key	Used for
`title`, `subtitle`	The title slide.
`author`, `institute`	The title slide.
`date`	The title slide, written out in full.
`logo`	The top right corner of every slide after the title slide.
`footer`	The centre of the footer.

Every RevealJS option works as usual: slide-number, incremental, transition, and the rest.

The format arrives with these already set, and each is an ordinary RevealJS or Quarto key you can override in your own front matter.

What the format sets before your front matter is read.
Key	Value
`theme`	`coeos.scss`
`syntax-highlighting`	`github-dark`
`mermaid.theme`	`dark`
`date-format`	`dddd[, the] Do [of] MMMM, YYYY`
`slide-number`	`c`
`code-annotations`	`select`
`logo`	`coeos.svg`
`footer`	A link to the theme author’s site and to the CC BY-SA 4.0 licence.
`pdf-separate-fragments`	`true`

Note

The default footer names the theme author and the theme’s own licence, not yours. Set footer in your front matter to replace it.

Alongside the stylesheet the format includes a script that adds five behaviours.

The behaviours the included script adds.
Behaviour	Effect
Ordinal dates	Superscripts the `st`, `nd`, `rd` and `th` of a written-out date.
Title slide chrome	Hides the logo and the menu button while the title slide is showing.
Tabsets as fragments	Steps a `.panel-tabset` through its tabs one fragment at a time, and opens the reached tab when exporting to PDF.
Code annotations	Reveals the annotation tooltip as the fragment that highlights its line arrives.
Favicon	Sets the page favicon from the slide logo.

quarto add mcanouil/quarto-iconify

iconify is optional. Installing it lets the footer and slides carry icons from any Iconify set; without it, everything else works unchanged.

RevealJS only.
There is nothing to mark up: the theme adds no shortcodes, filters, or classes of its own, and the behaviours above apply themselves to what a deck already contains.