# Tabs

Show one of several versions of the same thing, and let readers pick theirs.

Tabs hold alternatives: the same instructions for different systems, languages or plans. Readers see only the tab they pick, so the page stays short.

<Tabs>
<Tab title="Ubuntu">
Install the PHP extensions with apt:

```bash
sudo apt install php8.3-mbstring php8.3-xml php8.3-curl
```
</Tab>
<Tab title="CentOS or Rocky">
Install the PHP extensions with dnf:

```bash
sudo dnf install php-mbstring php-xml php-curl
```
</Tab>
<Tab title="Shared hosting">
Most panels have a **Select PHP version** page. Tick these extensions there:

- mbstring
- xml
- curl
</Tab>
</Tabs>

## When to use tabs

- **Use tabs** when a reader needs only one of the options.
- **Use [steps](https://justdocs.qdev.tech/docs/writing/steps)** when they need to do all of it, in order.
- Keep tab titles short and parallel: three systems, three languages, three plans.

<Note>
A tab can hold paragraphs, lists, code, images and tables. Callouts, diagrams and other tabs go outside it.
</Note>