How to exclude a test from appearing in the documentation

I'm working with Dredd the HTTP API Testing Framework to test my backend apis. Well the idea is that each time you create a test case a documentation will be generated automatically which is a good practice to ensure that documentation is always up to date and test driven. Sometimes I want to create a test case without generating its relative documentation. I would like to find a way how to exclude a test case from appearing into the documentation.

Thanks !