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---
robots: index, follow
lang: en
dir: ltr
breaks: true
---
Supported YAML metadata
===
First you need to insert syntax like this at the **start** of the note:
```
---
YAML metas
---
```
Replace the "YAML metas" in this section with any YAML options as below.
You can also refer to this note's source code.
title
---
This option will set the note title which prior than content title.
> default: not set
**Example**
```xml
title: meta title
```
description
---
This option will set the note description.
> default: not set
**Example**
```xml
description: meta description
```
tags
---
This option will set the tags which prior than content tags.
> default: not set
**Example**
```xml
tags: features, cool, updated
```
robots
---
This option will give below meta in the note head meta:
```xml
<meta name="robots" content="your_meta">
```
So you can prevent any search engine index your note by set `noindex, nofollow`.
> default: not set
**Example**
```xml
robots: noindex, nofollow
```
lang
---
This option will set the language of the note, that might alter some typography of it.
You can find your the language code in ISO 639-1 standard:
https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
> default: not set (which will be en)
**Example**
```xml
langs: ja-jp
```
dir
---
This option provide to describe the direction of the text in this note.
You can only use whether `rtl` or `ltr`.
Look more at here:
http://www.w3.org/International/questions/qa-html-dir
> default: not set (which will be ltr)
**Example**
```xml
dir: rtl
```
breaks
---
This option means the hardbreaks in the note will be parsed or be ignore.
The original markdown syntax breaks only if you put space twice, but HackMD choose to breaks every time you enter a break.
You can only use whether `true` or `false`.
> default: not set (which will be true)
**Example**
```xml
breaks: false
```
mathjax
---
This option let you to choose to parse mathjax syntax or not.
> default: not set (which will be true)
**Example**
```xml
mathjax: false
```
|
