zulip/templates/zerver/help/message-formatting.md

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# Message formatting
Zulip uses a variant of GitHub Flavored Markdown (GFM) to allow you to easily format your messages.
## Summary
For a summary of message formatting in Zulip, click the ![A](/static/images/help/formatting.png) icon located at the bottom left of your messaging box or the cog (![cog](/static/images/help/cog.png)) in the upper right corner of the right sidebar and choose “Message formatting” from the drop-down menu.
The following modal window will appear.
![Message formatting modal](/static/images/help/message-formatting-summary.png)
## Emphasis
You can surround your test with a combination of asterisks `*` and tildes `~` to emphasize words or phrases in your messages.
### Italics
For italics, surround your text with `*asterisks*`.
![Italicized text](/static/images/help/italics-screenshot.png)
### Bold
For bold text, surround your text with `**two asterisks**`.
![Bold text](/static/images/help/bold-screenshot.png)
### Strikethrough
For strikethrough text, surround your text with `~~two tildes~~`.
![Strikethrough text](/static/images/help/strikethrough-screenshot.png)
### Extra emphasis
To add more variety, flavor, and emphasis to your messages, you can combine different styles of formatting.
![Extra emphasized text](/static/images/help/extra-emphasis-screenshot.png)
## Links
To include hyperlinks in your messages, you can either enter the link's url address directly or surround the link's display text with`[brackets]` and the url address of the link in `(parentheses)` immediately after.
![Link](/static/images/help/link-screenshot.png)
Zulip currently does not support image embedding through links.
## Stream Links
To link to another stream in one of your messages, you can either type `#streamName` and click the stream name in the popup, or you can start with `#` and surround your message with double asteriks `**`.
![Stream Link Popup](/static/images/help/stream-link-pop-screenshot.png)
![Stream Links](/static/images/help/stream-link-screenshot.png)
## Lists
Begin each item in your list with `* an asterisk followed by a space` to include lists in your messages.
![Lists](/static/images/help/lists-screenshot.png)
## Emojis
Zulip features a variety of emojis provided by the [Noto Project](https://code.google.com/p/noto/). To include emojis in your messages, surround the emoji phrase with `:colons:`.
A dropdown will appear with suggested emojis as you enter the emoji phrase.
![Emojis](/static/images/help/emojis-screenshot.png)
A complete list of emojis can be found [here](http://www.webpagefx.com/tools/emoji-cheat-sheet/).
## Mentions
To call the attention of another member, you can alert other users by typing `@**username**"`
If you type `@` and then begin typing their email address or one of their names, and the system will offer you auto-completion suggestions.
![Mentions](/static/images/help/mention-screenshot.png)
Typing `@**all**` will alert all users in the stream, and a confirmation message will appear.
![Mention All](/static/images/help/all-confirm.png)
For more information on mentions, visit [here](/help/mention-a-team-member.md) for more information.
## Code
You can surround a portion of code with ``
`back-ticks`
`` to display it as inline code.
![Inline code](/static/images/help/inline-code-screenshot.png)
Multi-line blocks of code are either fenced by lines with <code>`````` three back-ticks```<code>```</code></code> or indented with four spaces.
![No code syntax highlighting](/static/images/help/no-syntax.png)
In addition, to highlight language syntax, add the file extension of the language (for example, Python would be **.py**) right after the first set of back-ticks.
![Python syntax highlighting](/static/images/help/python-syntax.png)
![JavaScript syntax highlighting](/static/images/help/javascript-syntax.png)
## Quotes
To insert quotes, you can either add a greater-than symbol ```>``` and a space before your phrase or submit it as a quote block by following the code syntax highlighting format.
![Quotes](/static/images/help/quotes-screenshot.png)