# Stuff

Replaces a substring that starts at the start index and has the specified length with the replacement string

```mathematica
Stuff("Central region", 2, 5) → "Cl region"
Stuff("Developer", 4, 6) → "Dev"
```

#### Inputs

`Stuff(string, startIndex, length, replaceWith)`

* `string` - A text value to replace in
* `startIndex` - Start index
* `length` - Lenght of the replaced part
* `replaceWith` - A text to replace with