_doc: add the test content for markdown

The content is the same with adoc one, with style updated to use
basic and [extended] syntax.

Many syntax are not worked, like tables and admonition.

[extended]: https://www.markdownguide.org/extended-syntax/

1 files changed, 243 insertions, 2 deletions

diff --git a/_doc/test-md.md b/_doc/test-md.md
index ce9f4e9..4fc7504 100644
--- a/_doc/test-md.md
+++ b/_doc/test-md.md
@@ -1,11 +1,252 @@
-<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
-<!-- SPDX-FileCopyrightText: 2026 M. Shulhan <ms@kilabit.info> -->
+---
+Title: Example Document title
+description: asciidoc document for testing style of ciigo
+---
 
 # _Example `Document` **title**_
 
+Author A <a@a.com>; Author mid_dle B <b@b.com>
+v1.2.3, 18 July 2020: remark
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat
+non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+## Paragraph
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat
+non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
 Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
 tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
 quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
 consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
 cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat
 non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+## Heading 1
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua.
+
+### Heading 2
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua.
+
+#### Heading 3
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua.
+
+##### Heading 4
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua.
+
+###### Heading 5
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua.
+
+## List
+
+### Ordered list
+
+Example of ordered list,
+
+1. Orange
+
+   Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+   tempor incididunt ut labore et dolore magna aliqua.
+
+2. Red
+   1. Yellow
+   2. Blue
+
+3. Green
+   Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+   tempor incididunt ut labore et dolore magna aliqua.
+   1. Black
+
+      Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+      tempor incididunt ut labore et dolore magna aliqua.
+      1. White
+
+         Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+         tempor incididunt ut labore et dolore magna aliqua.
+
+### Unordered list
+
+Example of unordered list,
+
+- Orange
+
+  Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+  tempor incididunt ut labore et dolore magna aliqua.
+
+- Red
+  - Yellow
+  - Blue
+
+- Green
+
+  Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+  tempor incididunt ut labore et dolore magna aliqua.
+  - Black
+
+    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+    tempor incididunt ut labore et dolore magna aliqua.
+    - White
+
+      Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+      tempor incididunt ut labore et dolore magna aliqua.
+
+### Checklists
+
+Example of check list,
+
+- [x] checked
+- [x] also checked
+- [ ] not checked
+
+### Description lists
+
+CPU
+: The brain of the computer.
+
+Hard drive
+: Permanent storage for operating system and/or user files.
+
+RAM
+: Temporarily stores information the CPU uses during operation.
+
+Keyboard
+: Used to enter text or control items on the screen.
+
+Mouse
+: Used to point to and select items on your computer screen.
+
+Monitor
+: Displays information in visual form using text and graphics.
+
+## Table
+
+| Cell in column 1, row 1 | Cell in column 2, row 1 |
+| ----------------------- | ----------------------- |
+| Cell in column 1, row 2 | Cell in column 2, row 2 |
+| Cell in column 1, row 3 | Cell in column 2, row 3 |
+
+| Cell in column 1, header row | Cell in column 2, header row |
+| ---------------------------- | ---------------------------- |
+| Cell in column 1, row 2      | Cell in column 2, row 2      |
+| Cell in column 1, row 3      | Cell in column 2, row 3      |
+| Cell in column 1, row 4      | Cell in column 2, row 4      |
+
+### Table with title (not supported)
+
+.A table with a title
+
+| Column 1, header row    | Column 2, header row    |
+| ----------------------- | ----------------------- |
+| Cell in column 1, row 2 | Cell in column 2, row 2 |
+
+### Adjust column widths (not supported)
+
+| Column 1   | Column 2   | Column 3   |
+| ---------- | ---------- | ---------- |
+| width of 2 | width of 1 | width of 3 |
+
+### Align content by column (not supported)
+
+|      Column name       |      Column name       |
+| :--------------------: | :--------------------: |
+| horizontally centered. | horizontally centered. |
+
+| Column name | Column name | Column name |
+| :---------: | :---------- | ----------: |
+|   Center    | Left        |       Right |
+
+### Table Striping (not supported)
+
+| H1  | H2  |
+| --- | --- |
+| A1  | B1  |
+| A2  | B2  |
+| A3  | B3  |
+| A4  | B4  |
+
+## Verbatim and Source blocks
+
+Example of pre,
+
+```
+var staticfs \*memfs.MemFS
+
+type Ciigo struct {
+HTTPServer *libhttp.Server
+converter *Converter
+watcher \*watcher
+serveOpts ServeOptions
+}
+```
+
+`ciigo` is a program (as in command line interface, CLI) and a library (as
+in Go package) to write static web server with embedded files using
+[AsciiDoc](https://asciidoctor.org/docs/what-is-asciidoc/)
+and
+[Markdown](https://www.markdownguide.org/)
+markup format.
+
+## Admonitions
+
+Sample paragraph in between admonition.
+
+> :note: Wolpertingers are known to nest in server racks.
+> Enter at your own risk.
+
+Sample paragraph in between admonition.
+
+> :tip: While werewolves are hardy community members, keep in mind the
+> following dietary concerns:
+>
+> 1. They are allergic to cinnamon.
+> 2. More than two glasses of orange juice in 24 hours makes them howl in harmony with alarms and sirens.
+> 3. Celery makes them sad.
+
+Sample paragraph in between admonition.
+
+> :important: While werewolves are hardy community members, keep in mind the
+> following dietary concerns:
+>
+> 1. They are allergic to cinnamon.
+> 2. More than two glasses of orange juice in 24 hours makes them howl in
+>    harmony with alarms and sirens.
+> 3. Celery makes them sad.
+
+Sample paragraph in between admonition.
+
+> :CAUTION: .Feeding the Werewolves
+>
+> While werewolves are hardy community members, keep in mind the following
+> dietary concerns:
+>
+> - They are allergic to cinnamon.
+> - More than two glasses of orange juice in 24 hours makes them howl in
+>   harmony with alarms and sirens.
+> - Celery makes them sad.
+
+Sample paragraph in between admonition.
+
+> :warning: Wolpertingers are known to nest in server racks.
+> Enter at your own risk.
+
+<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
+<!-- SPDX-FileCopyrightText: 2026 M. Shulhan <ms@kilabit.info> -->