around a bit and add some 
to your 
. Well we have a gift for you:
You can use emoji anywhere GFM is supported. 
You can use it to point out a 
or warn about 
patches. And if someone improves your really 
code, send them some 
. People will 
you for that.
If you're new to this, don't be 
. You can join the emoji 
. All you need to do is to look up one of the supported codes.
Consult the [Emoji Cheat Sheet](https://www.webfx.com/tools/emoji-cheat-sheet/) for a list of all supported emoji codes. 
#### Emoji and your OS
The emoji example above uses hard-coded images for this documentation. The emoji,
when rendered within GitLab, may appear different depending on the OS and browser used.
Most emoji are natively supported on macOS, Windows, iOS, Android, and fall back on image-based
emoji where there is no support.
On Linux, you can download [Noto Color Emoji](https://www.google.com/get/noto/help/emoji/)
to get full native emoji support. Ubuntu 18.04 (like many modern Linux distributions) has
this font installed by default.
### Front matter
> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/23331) in GitLab 11.6.
Front matter is metadata included at the beginning of a Markdown document, preceding
its content. This data can be used by static site generators such as [Jekyll](https://jekyllrb.com/docs/front-matter/),
[Hugo](https://gohugo.io/content-management/front-matter/), and many other applications.
When you view a Markdown file rendered by GitLab, any front matter is displayed as-is,
in a box at the top of the document, before the rendered HTML content. To view an example,
you can toggle between the source and rendered version of a [GitLab documentation file](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/README.md).
In GitLab, front matter is only used in Markdown files and wiki pages, not the other
places where Markdown formatting is supported. It must be at the very top of the document
and must be between delimiters, as explained below.
The following delimiters are supported:
- YAML (`---`):
```yaml
---
title: About Front Matter
example:
language: yaml
---
```
- TOML (`+++`):
```toml
+++
title = "About Front Matter"
[example]
language = "toml"
+++
```
- JSON (`;;;`):
```json
;;;
{
"title": "About Front Matter"
"example": {
"language": "json"
}
}
;;;
```
Other languages are supported by adding a specifier to any of the existing
delimiters. For example:
```php
---php
$title = "About Front Matter";
$example = array(
'language' => "php",
);
---
```
### Inline diff
If this section is not rendered correctly, [view it in GitLab](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#inline-diff).
With inline diff tags you can display `{+ additions +}` or `[- deletions -]`.
The wrapping tags can be either curly braces or square brackets:
```markdown
- {+ addition 1 +}
- [+ addition 2 +]
- {- deletion 3 -}
- [- deletion 4 -]
```
---
However, the wrapping tags can't be mixed:
```markdown
- {+ addition +]
- [+ addition +}
- {- deletion -]
- [- deletion -}
```
If your diff includes words in `` `code` `` font, make sure to escape each backtick `` ` `` with a
backslash `\`, otherwise the diff highlight don't render correctly:
```markdown
- {+ Just regular text +}
- {+ Text with `backticks` inside +}
- {+ Text with escaped \`backticks\` inside +}
```
### Math
If this section is not rendered correctly, [view it in GitLab](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#math).
It's possible to have math written with LaTeX syntax rendered using [KaTeX](https://github.com/KaTeX/KaTeX).
Math written between dollar signs `$` are rendered inline with the text. Math written
inside a [code block](#code-spans-and-blocks) with the language declared as `math`, are rendered
on a separate line:
````markdown
This math is inline $`a^2+b^2=c^2`$.
This is on a separate line
```math
a^2+b^2=c^2
```
````
This math is inline $`a^2+b^2=c^2`$.
This is on a separate line
```math
a^2+b^2=c^2
```
_Be advised that KaTeX only supports a [subset](https://katex.org/docs/supported.html) of LaTeX._
This also works for the Asciidoctor `:stem: latexmath`. For details, see
the [Asciidoctor user manual](https://asciidoctor.org/docs/user-manual/#activating-stem-support).
### Special GitLab references
GFM recognizes special GitLab related references. For example, you can reference
an issue, a commit, a team member, or even the whole team within a project. GFM turns
that reference into a link so you can navigate between them.
Additionally, GFM recognizes certain cross-project references and also has a shorthand
version to reference other projects from the same namespace.
GFM recognizes the following:
| references | input | cross-project reference | shortcut within same namespace |
| :------------------------------ | :------------------------- | :-------------------------------------- | :----------------------------- |
| specific user | `@user_name` | | |
| specific group | `@group_name` | | |
| entire team | `@all` | | |
| project | `namespace/project>` | | |
| issue | ``#123`` | `namespace/project#123` | `project#123` |
| merge request | `!123` | `namespace/project!123` | `project!123` |
| snippet | `$123` | `namespace/project$123` | `project$123` |
| epic **(ULTIMATE)** | `&123` | `group1/subgroup&123` | |
| vulnerability **(ULTIMATE)** (1)| `[vulnerability:123]` | `[vulnerability:namespace/project/123]` | `[vulnerability:project/123]` |
| label by ID | `~123` | `namespace/project~123` | `project~123` |
| one-word label by name | `~bug` | `namespace/project~bug` | `project~bug` |
| multi-word label by name | `~"feature request"` | `namespace/project~"feature request"` | `project~"feature request"` |
| scoped label by name | `~"priority::high"` | `namespace/project~"priority::high"` | `project~"priority::high"` |
| project milestone by ID | `%123` | `namespace/project%123` | `project%123` |
| one-word milestone by name | `%v1.23` | `namespace/project%v1.23` | `project%v1.23` |
| multi-word milestone by name | `%"release candidate"` | `namespace/project%"release candidate"` | `project%"release candidate"` |
| specific commit | `9ba12248` | `namespace/project@9ba12248` | `project@9ba12248` |
| commit range comparison | `9ba12248...b19a04f5` | `namespace/project@9ba12248...b19a04f5` | `project@9ba12248...b19a04f5` |
| repository file references | `[README](doc/README.md)` | | |
| repository file line references | `[README](doc/README.md#L13)` | | |
| [alert](../operations/incident_management/alerts.md) | `^alert#123` | `namespace/project^alert#123` | `project^alert#123` |
1. [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/222483) in GitLab 13.7.
For example, referencing an issue by using `#123` will format the output as a link
to issue number 123 with text `#123`. Likewise, a link to issue number 123 will be
recognized and formatted with text `#123`.
In addition to this, links to some objects are also recognized and formatted. Some examples of these are:
- Comments on issues: `"https://gitlab.com/gitlab-org/gitlab/-/issues/1234#note_101075757"`, which are rendered as `#1234 (comment 101075757)`
- The issues designs tab: `"https://gitlab.com/gitlab-org/gitlab/-/issues/1234/designs"`, which are rendered as `#1234 (designs)`.
- Links to individual designs: `"https://gitlab.com/gitlab-org/gitlab/-/issues/1234/designs/layout.png"`, which are rendered as `#1234[layout.png]`.
### Task lists
If this section is not rendered correctly, [view it in GitLab itself](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#task-lists).
You can add task lists anywhere Markdown is supported, but you can only "click"
to toggle the boxes if they are in issues, merge requests, or comments. In other
places you must edit the Markdown manually to change the status by adding or
removing an `x` within the square brackets.
To create a task list, add a specially-formatted Markdown list. You can use either
unordered or ordered lists:
```markdown
- [x] Completed task
- [ ] Incomplete task
- [ ] Sub-task 1
- [x] Sub-task 2
- [ ] Sub-task 3
1. [x] Completed task
1. [ ] Incomplete task
1. [ ] Sub-task 1
1. [x] Sub-task 2
```
### Table of contents
You can add a table of contents to a Markdown file, wiki page, or issue/merge request
description, by adding the tag `[[_TOC_]]` on its own line.
It appears as an unordered list that links to the various headers.
```markdown
This is an intro sentence to my Wiki page.
[[_TOC_]]
## My first heading
First section content.
## My second heading
Second section content.
```
### Wiki-specific Markdown
The following examples show how links inside wikis behave.
#### Wiki - direct page link
A link which just includes the slug for a page points to that page,
_at the base level of the wiki_.
This snippet would link to a `documentation` page at the root of your wiki:
```markdown
[Link to Documentation](documentation)
```
#### Wiki - direct file link
Links with a file extension point to that file, _relative to the current page_.
If the snippet below was placed on a page at `A footnote reference tag looks like this: [^1]
This reference tag is a mix of letters and numbers. [^footnote-42]
[^1]: This is the text inside a footnote.
[^footnote-42]: This is another footnote.
Inline-style (hover to see title text):
Reference-style (hover to see title text):
![alt text1][logo]
[logo]: img/markdown_logo.png "Title Text"
Click this to collapse/fold.
These details remain hidden until expanded.
PASTE LOGS HERE
Click this to collapse/fold.
These details remain hidden until expanded.
PASTE LOGS HERE
PASTE LOGS HERE- This is an [inline-style link](https://www.google.com)
- This is a [link to a repository file in the same directory](index.md)
- This is a [relative link to a readme one directory higher](../README.md)
- This is a [link that also has title text](https://www.google.com "This link takes you to Google!")
Using header ID anchors:
- This links to [a section on a different Markdown page, using a "#" and the header ID](index.md#overview)
- This links to [a different section on the same page, using a "#" and the header ID](#header-ids-and-links)
Using references:
- This is a [reference-style link, see below][Arbitrary case-insensitive reference text]
- You can [use numbers for reference-style link definitions, see below][1]
- Or leave it empty and use the [link text itself][], see below.
Some text to show that the reference links can follow later.
[arbitrary case-insensitive reference text]: https://www.mozilla.org/en-US/
[1]: https://slashdot.org
[link text itself]: https://www.reddit.com