> ## Documentation Index
> Fetch the complete documentation index at: https://support.calderapbc.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Text editor

> Learn the chat box's shortcuts and file-referencing features.

The text editor, the chat box on the Home and New Conversation pages, is your primary way of communicating with Mesa. Knowing its shortcuts helps you write prompts faster and pull in the right files without leaving the keyboard.

## Write and send messages

Press `Enter` to send your message. By default, `Shift + Enter` starts a new line.

<Tip>
  You can swap these keys in [Settings](/settings) if you prefer `Enter` to start new lines.
</Tip>

## Reference files from the chat box

Type `@` to open the **Select from my files** option. Press `Enter` while it's open and Mesa expands a larger screen where you can tag specific saved files in your question.

To add a one-off document instead, click the paperclip icon or drag and drop the file into the chat box.

<Tip>
  Learn when to tag versus attach in [Tagging files](/tagging-files) and [Attachments](/attachments).
</Tip>

## Keyboard shortcuts

| Action                | Shortcut                 |
| --------------------- | ------------------------ |
| Send message          | `Enter`                  |
| Start a new line      | `Shift + Enter`          |
| Open file tagging     | `@`                      |
| Open the file manager | Click the paperclip icon |

## Related articles

<Card title="Writing effective prompts" href="/prompting" horizontal>
  Phrase your requests so Mesa gives you answers you can use directly.
</Card>

<Card title="Tagging files" href="/tagging-files" horizontal>
  Reference saved Mesa files directly from the chat box.
</Card>

<Card title="Skills" href="/skills" horizontal>
  Invoke reusable task instructions from the chat box.
</Card>