When talking about Audulus, you’re bound to find yourself writing some mathematical expressions.

A nice way to make these expressions stand out of your posts’ text is to use `the code comment feature.`

This uses a set of backticks around your expression to change the font from sans-serif to `fixed-width`

, and adds a little hightlight to the background.

Compare the readability of sin(x^2*10)/pi with `sin(x^2*10)/pi`

. The code comment feature makes the formula pop a little more.

The backtick is the little single quote below the tilde ~ on your keyboard.

```
`x^2`
```

is

`x^2`

If you want to comment multiple lines, you can add four spaces `•`

before the text, like this:

```
•••• Line 1
•••• Line 2
•••• Line 3
•••• etc.
```

### ProTip: Audulus Syntax

When commenting with expressions like this, try to use Audulus’ syntax so that people can easily copy and paste your formulas into their patches.

Audulus will not parse `x(y)`

. You must write `x*y`

.

You also cannot have spaces between a variable. For example `Volume Knob*x`

won’t parse, but `VolumeKnob*x`

will.

You can however have spaces in between variables and operators like this

`sin ( VolumeKnob ) * x`

which is the same as

`sin(VolumeKnob)*x`

For expressing more complex math formulas, especially when doing a tutorial about a concept where you don’t intend the user to drop a formula into an Expression node, consider using MathJax syntax so you can create clear and beautifully formatted equations like this