``` alert type=note
Note: `test` mode.
```

``` alert type=tip
This is a **Tip**.
```

``` alert type=warning
Warning:
system *busy*.
```

``` alert type=caution
<span class="red">Error</span>: file not found.
```

``` alert type=caution title="Not Found"
<span class="red">Error</span>: file not found.
```