H1# Text Editor

A Markdown editor set as a page of the manual. Type on the left; the proof sets

itself on the right.

H2## The marks

Down the left margin, each line that opens a block wears its mark — the annotation

a copy-editor pencils down the side of a proof. Put the caret on this line to see

it lit.

**Bold**, *italic*, ~~struck~~, and `code` all set as you would expect. A [link](/apps)

goes cobalt.

>> A quotation takes the cobalt margin rule and the serif face.

H2## The keys

|| Key | What it does |

||-----|---------------------|

|| H1 | Sets the line as a heading |

|| B | Wraps the selection in bold |

|| <> | Wraps it in code |

1.1. Press a key with text selected and it wraps what you chose.

2.2. Press it with nothing selected and it leaves the marks with the caret between them.

3.3. Enter carries a list on. Enter on an empty item ends it.

H2## The listing

<>```js

// Code sets as a listing, numbered in the pixel face.

export const sheet = (mm) => mm * 2.83465;

<>```

-----

Everything is kept in this browser as you type. Nothing is sent anywhere.

# Text Editor

A Markdown editor set as a page of the manual. Type on the left; the proof sets
itself on the right.

## The marks

Down the left margin, each line that opens a block wears its mark — the annotation
a copy-editor pencils down the side of a proof. Put the caret on this line to see
it lit.

**Bold**, *italic*, ~~struck~~, and `code` all set as you would expect. A [link](/apps)
goes cobalt.

> A quotation takes the cobalt margin rule and the serif face.

## The keys

| Key | What it does        |
|-----|---------------------|
| H1  | Sets the line as a heading |
| B   | Wraps the selection in bold |
| <>  | Wraps it in code    |

1. Press a key with text selected and it wraps what you chose.
2. Press it with nothing selected and it leaves the marks with the caret between them.
3. Enter carries a list on. Enter on an empty item ends it.

## The listing

```js
// Code sets as a listing, numbered in the pixel face.
export const sheet = (mm) => mm * 2.83465;
```

---

Everything is kept in this browser as you type. Nothing is sent anywhere.

Text Editor

A Markdown editor set as a page of the manual. Type on the left; the proof sets itself on the right.

The marks

Down the left margin, each line that opens a block wears its mark — the annotation a copy-editor pencils down the side of a proof. Put the caret on this line to see it lit.

Bold, italic, ~~struck~~, and code all set as you would expect. A link goes cobalt.

A quotation takes the cobalt margin rule and the serif face.

The keys

Key	What it does
H1	Sets the line as a heading
B	Wraps the selection in bold
<>	Wraps it in code

Press a key with text selected and it wraps what you chose.
Press it with nothing selected and it leaves the marks with the caret between them.
Enter carries a list on. Enter on an empty item ends it.

The listing

// Code sets as a listing, numbered in the pixel face.
export const sheet = (mm) => mm * 2.83465;

Everything is kept in this browser as you type. Nothing is sent anywhere.

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