The post New Markdown extension: Alerts provide distinctive styling for significant content appeared first on The GitHub Blog.

]]>Alerts are a Markdown extension displayed with distinctive colors and icons to indicate the significance of the content. Five different types of alerts are supported:

**Note:**Useful information that users should know, even when skimming content.**Tip:**Helpful advice for doing things better or more easily.**Important:**Key information users need to know to achieve their goal.**Warning:**Urgent info that needs immediate user attention to avoid problems.**Caution:**Advises about risks or negative outcomes of certain actions.

Learn more about how to use them within your Markdown content in the documentation.

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]]>The post New delimiter syntax for inline mathematical expressions appeared first on The GitHub Blog.

]]>`$`\sqrt{3}`$`

). This new syntax is especially useful if the mathematical expressions you're writing contain characters that overlap with Markdown syntax.
To learn more about using mathematical expressions within Markdown on GitHub, check out "Writing mathematical expressions" in the GitHub Docs.

The post New delimiter syntax for inline mathematical expressions appeared first on The GitHub Blog.

]]>The post Specify theme context for images in Markdown GA appeared first on The GitHub Blog.

]]>`<picture>`

element in combination with the `prefers-color-scheme`

media feature.
**For example:**

```
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/25423296/163456776-7f95b81a-f1ed-45f7-b7ab-8fa810d529fa.png">
<img alt="Shows an illustrated sun in light color mode and a moon with stars in dark color mode." src="https://user-images.githubusercontent.com/25423296/163456779-a8556205-d0a5-45e2-ac17-42d089e3c3f8.png">
</picture>
```

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]]>The post Wikis now support math and Mermaid diagrams appeared first on The GitHub Blog.

]]>For more information about using mathematical expressions and Mermaid with GitHub, see creating diagrams and writing mathematical expressions in the GitHub documentation.

The post Wikis now support math and Mermaid diagrams appeared first on The GitHub Blog.

]]>The post Fenced block syntax for mathematical expressions appeared first on The GitHub Blog.

]]>````math`

fenced code block syntax in addition to the already supported delimiters. Two dollar sign `$$`

delimiters are not required if this method is used.
```
**Here is some math!**
```math
\sqrt{3}
```
```

becomes

Read more about working with advanced formatting

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]]>The post Updates to Markdown pasting on GitHub appeared first on The GitHub Blog.

]]>`[...](https://...)`

by using the keyboard shortcut `cmd|ctrl + v`

.
The following paste formatting changes have been made to pull requests, issue comments and wikis:

- Spreadsheet cells and HTML tables will render as Markdown tables
- Any copied text containing links will render the links in Markdown

All of this formatting can be disabled when pasting using the keyboard shortcut: `cmd|ctl + shift + v`

or `cmd|ctl + shift + Alt + v`

.

Learn more about writing and formatting at GitHub.

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]]>The post Render mathematical expressions in Markdown appeared first on The GitHub Blog.

]]>`$`

delimiters) or in blocks (using `$$`

delimiters).
To add math as a multiline block displayed separately from surrounding text, start a new line and delimit the expression with two dollar symbols `$$`

.

```
**The Cauchy-Schwarz Inequality**
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
```

To include a math expression inline with your text, delimit the expression with a dollar symbol `$`

.

`This sentence uses `$` delimiters to show math inline: $\sqrt{3x-1}+(1+x)^2$`

GitHub's math rendering capability uses MathJax; an open source, JavaScript-based display engine. MathJax supports a wide range of LaTeX macros and a number of useful accessibility extensions. For more information, see the MathJax documentation and the MathJax Accessibility Extensions documentation.

Some users have previously used a workaround to generate images of mathematical expressions through API requests. Images generated this way will remain viewable, but this technique will no longer work. Going forward, expressions should be written directly in Markdown using LaTeX syntax as described above.

For more information about authoring content with advanced formatting, see Working with advanced formatting in the GitHub documentation.

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]]>The post Specify theme context for images in Markdown (Beta) appeared first on The GitHub Blog.

]]>`<picture>`

element in combination with the `prefers-color-scheme`

media feature.
**For example:**

```
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://user-images.githubusercontent.com/25423296/163456776-7f95b81a-f1ed-45f7-b7ab-8fa810d529fa.png">
<img alt="Shows an illustrated sun in light color mode and a moon with stars in dark color mode." src="https://user-images.githubusercontent.com/25423296/163456779-a8556205-d0a5-45e2-ac17-42d089e3c3f8.png">
</picture>
```

The post Specify theme context for images in Markdown (Beta) appeared first on The GitHub Blog.

]]>The post Mermaid, topoJSON, geoJSON, and ASCII STL Diagrams Are Now Supported in Markdown and as Files appeared first on The GitHub Blog.

]]>`geojson`

or `topojson`

syntax, and embed STL 3D renders using `stl`

syntax.
Additionally, these diagrams are supported as files using their own extensions:

content type | supported extensions |
---|---|

mermaid | .mermaid, .mmd |

geoJSON | .geojson, .json |

topoJSON | .topojson, .json |

STL | .stl |

For more information about using diagrams on GitHub, see Creating diagrams in the GitHub documentation

For more information about non-code filetypes on GitHub, see Working with non-code files

### Here's a geoJSON map in markdown ```geojson { "type": "Polygon", "coordinates": [ [ [-90,30], [-90,35], [-90,35], [-85,35], [-85,30] ] ] } ```

### Here's a topoJSON map in markdown ```topojson {"type":"Topology","transform":{"scale":[0.003589294092944858,0.0005371535195261037],"translate":[-179.1473400003406,17.67439566600018]},"objects":{"counties": {"type":"GeometryCollection","geometries":[{"type":"MultiPolygon","arcs":[[[0,1,2,3]]],"id":53073},{"type":"Polygon","arcs":[[4,5,6,7,8,9]],"id":30105},{"type":"Polygon","arcs": [[10,11,12,1 ... ```

### Here's an STL 3D render in markdown ```stl solid cube_corner facet normal 0.0 -1.0 0.0 outer loop vertex 0.0 0.0 0.0 vertex 1.0 0.0 0.0 vertex 0.0 0.0 1.0 endloop endfacet ... ```

The post Mermaid, topoJSON, geoJSON, and ASCII STL Diagrams Are Now Supported in Markdown and as Files appeared first on The GitHub Blog.

]]>The post Reference labels in Markdown appeared first on The GitHub Blog.

]]>The post Reference labels in Markdown appeared first on The GitHub Blog.

]]>