Add documentation of fragmented list

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- Add [documentation of fragmented list](https://marpit.marp.app/fragmented-list) ([#152](https://github.com/marp-team/marpit/pull/152))
+
 ## v0.9.2 - 2019-04-08
 
 ### Fixed

docs/_sidebar.md

@@ -3,6 +3,7 @@
 - <br>[Marpit Markdown](/markdown)
   - [Directives](/directives)
   - [Image syntax](/image-syntax)
+  - [Fragmented list](/fragmented-list)
 - [Theme CSS](/theme-css)
 - [Inline SVG slide](/inline-svg)
 

docs/fragmented-list.md

@@ -0,0 +1,80 @@
+# Fragmented list
+
+Since v0.9.0, Marpit will parse lists with specific markers as the **fragmented list** for appearing contents one by one.
+
+## For bullet list
+
+CommonMark allows `-`, `+`, and `*` as the character of [bullet list marker](https://spec.commonmark.org/0.29/#bullet-list-marker). Marpit would parse as fragmented list if you are using `*` as the marker.
+
+<!-- prettier-ignore-start -->
+
+```markdown
+# Bullet list
+
+- One
+- Two
+- Three
+
+---
+
+# Fragmented list
+
+* One
+* Two
+* Three
+```
+
+<!-- prettier-ignore-end -->
+
+## For ordered list
+
+CommonMark's [ordered list marker](https://spec.commonmark.org/0.29/#ordered-list-marker) must have `.` or `)` after digits. Marpit would parse as fragmented list if you are using `)` as the following character.
+
+<!-- prettier-ignore-start -->
+
+```markdown
+# Ordered list
+
+1. One
+2. Two
+3. Three
+
+---
+
+# Fragmented list
+
+1) One
+2) Two
+3) Three
+```
+
+<!-- prettier-ignore-end -->
+
+## Rendering
+
+A structure of rendered HTML from the fragmented list is same as the regular list. It just adds `data-marpit-fragment` data attribute to list items. They would be numbered from 1 in order of recognized items.
+
+In addition, `<section>` element of the slide that has fragmented list would be added `data-marpit-fragments` data attribute. It shows the number of fragmented list items of its slide.
+
+The below HTML is a rendered result of [bullet list example](#for-bullet-list).
+
+```html
+<section id="1">
+  <h1>Bullet list</h1>
+  <ul>
+    <li>One</li>
+    <li>Two</li>
+    <li>Three</li>
+  </ul>
+</section>
+<section id="2" data-marpit-fragments="3">
+  <h1>Fragmented list</h1>
+  <ul>
+    <li data-marpit-fragment="1">One</li>
+    <li data-marpit-fragment="2">Two</li>
+    <li data-marpit-fragment="3">Three</li>
+  </ul>
+</section>
+```
+
+?> Fragmented list does not change DOM structure and appearances. It relys on a behavior of the integrated app whether actually treats the rendered list as fragments.

docs/markdown.md

@@ -22,5 +22,14 @@ bar
 
 ## Extended features
 
-- [Directives](/directives)
-- [Image syntax](/image-syntax)
+### [Directives](/directives)
+
+Marpit Markdown has extended syntax called **"Directives"** to support writing awesome slides. It can control your slide-deck theme, page number, header, footer, style, and so on.
+
+### [Image syntax](/image-syntax)
+
+Marpit has extended Markdown image syntax `![](image.jpg)` to be helpful creating beautiful slides.
+
+### [Fragmented list](/fragmented-list)
+
+Since v0.9.0, Marpit will parse lists with specific markers as the **fragmented list** for appearing contents one by one.