Input formats define a way of processing user's text. The input is stored as text. Filters are applied before the text is displayed on a web page. Every input format is a set of filters which are applied to the text. For example, a filter can replace return with <br> tags or convert a URL into a link. Users can choose an input format before submitting content.

You can also define you own custom input formats. To define a new custom format:

Administer > Site configuration > Input formats > Add input format

- Type a name for your filter
- Choose Roles
- Choose Filters
- Save configuration