# Writing content

> Markdown, MDX and code blocks.

Pages are MDX. Standard Markdown works as expected, and every [component](/components/callout) is available without an import.

## Code blocks

Add a filename in brackets after the language. Highlight lines with a range in braces.

````md
```ts [src/config.ts] {2}
export const site = {
  title: 'Mines',
};
```
````

```ts [src/config.ts] {2}
export const site = {
  title: 'Mines',
};
```

Shiki notation comments mark diffs and highlights inline.

```ts
const theme = 'light'; // [!code --]
const theme = 'dark'; // [!code ++]
applyTheme(theme); // [!code highlight]
```

## Inline elements

Text can use **bold**, _italic_, `inline code`, [links](/getting-started/introduction) and keyboard keys like <Kbd>Shift</Kbd>.

> Blockquotes are quiet and italic.

## Tables

| Option | Type | Default |
| --- | --- | --- |
| `subNav` | `'none' \| 'header'` | `'none'` |
| `og` | `boolean` | `true` |