A LaTeX "symbol" is a character or a backslash followed by a symbol name, that is rendered by LaTeX. Some symbols have required parameters that contain text that is rendered "inside" the given symbol, such as `\sqrt`

in the following example.

### ExampleEdit

The following,

```
x
```

\sin

\sqrt{3}

are symbols, which are rendered as

**Failed to parse (unknown function\begin): \begin{split} & x \\ & \sin \\ & \sqrt{3} \end{split} **