```js
let a = 0;
```

``` c++
int a = 0;
```

``` c#
var a = 0;
```

```{r pressure, echo=FALSE}
plot(pressure)
```

----------------------------------------------------

<span class="token code">
	<span class="token punctuation">```</span>
	<span class="token code-language">js</span>
	<span class="token code-block language-js">let a = 0;</span>
	<span class="token punctuation">```</span>
</span>

<span class="token code">
	<span class="token punctuation">```</span>
	<span class="token code-language">c++</span>
	<span class="token code-block language-cpp">int a = 0;</span>
	<span class="token punctuation">```</span>
</span>

<span class="token code">
	<span class="token punctuation">```</span>
	<span class="token code-language">c#</span>
	<span class="token code-block language-csharp">var a = 0;</span>
	<span class="token punctuation">```</span>
</span>

<span class="token code">
	<span class="token punctuation">```</span>
	<span class="token code-language">{r pressure, echo=FALSE}</span>
	<span class="token code-block language-r">plot(pressure)</span>
	<span class="token punctuation">```</span>
</span>
