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.

### Example

The following,

 x \sin \sqrt{3} 

are symbols, which are rendered as

$split}"): {\displaystyle \begin{split} & x \\ & \sin \\ & \sqrt{3} \end{split}$