# Markdown Labeling Editor
Ango Hub provides a labeling editor with which Markdown files can be annotated.
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This article will exclusively go over Ango Hub’s Markdown labeling interface. Features common to all labeling editors are instead [explained here](https://docs.imerit.net/labeling/labeling-editor-interface).
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## Overview
### Supported File Types
The markdown labeling editor supports text assets with the following file extensions:
* .md
### Supported Labeling Tools
The markdown labeling editor supports following labeling tools:
**Classifications**
* Radio
* Checkbox
* Single-Select Dropdown
* Multi-Select Dropdown
* Single-Select Tree
* Multi-Select Tree
* Text
**Relations**
* Single Relation
* Group Relation
### Top Bar
### Model Plugins
Click on the "Model Plugins" button to open a list of [model-type plugins](https://docs.imerit.net/plugins/plugin-developer-documentation) available in your organization.
If a [default preset](https://docs.imerit.net/plugins/introduction-to-plugins/plugin-configuration-and-preset-management) has been set for the plugin, the button will be clickable, and clicking on it once will run the plugin on the current asset with the default settings.
Clicking on the three dots next to the model name will open the Model Run Dialog, allowing you to customize the plugin's run settings and to run the plugin on the current asset with settings of your choice.
### KaTeX and LaTeX Rendering
The *Enable KaTeX Rendering* button will render any mathematical LaTeX markup visible in the asset into formatted mathematical notation.
The *Compile as LaTeX* button will take the text content of the current asset and treat it as LaTeX markup, then attempt to compile the document. If compilation was successful, it will display the resulting PDF. Through the option toggles, you may ask Ango Hub to wrap the text with a document environment (i.e. `\begin{document}` and `\end{document}`) and to add a document-type class.
## How to Annotate Markdown
In Markdown assets, only classifications are available.
From the *Classifications* panel on the left sidebar, answer the classification questions. When done, click on *Submit* on the top-right corner of the screen.
### Keyboard Shortcuts
A full list of keyboard shortcuts is available by clicking on the *Keyboard* button on the right side of the top bar:
### Further reading
{% content-ref url="audio-labeling-editor" %}
[audio-labeling-editor](https://docs.imerit.net/labeling/labeling-editor-interface/audio-labeling-editor)
{% endcontent-ref %}
{% content-ref url="image-labeling-editor" %}
[image-labeling-editor](https://docs.imerit.net/labeling/labeling-editor-interface/image-labeling-editor)
{% endcontent-ref %}
{% content-ref url="pdf-labeling-editor" %}
[pdf-labeling-editor](https://docs.imerit.net/labeling/labeling-editor-interface/pdf-labeling-editor)
{% endcontent-ref %}
{% content-ref url="" %}
[](https://docs.imerit.net/labeling/labeling-editor-interface)
{% endcontent-ref %}
