Baselines can be useful:

• When you want to test a specific version of your software,
• When requirements evolve after you've raised a JIRA issue,
• To keep track of requirements that have been approved by a client.

Create a baseline of a subset of the requirements

A baseline contains a snapshot of your requirements at a given point of time. You can create a baseline from the blueprint or from the search. The "Make baseline" button is available on the search screen:

Baselines are represented by a page

You can add the description of your release (release notes, testing, etc) on that page:

The page of the baseline links to the frozen version of the requirements. They display the history version of the page they're on.

See baselines in the page history

When you view an old version of a page, the detail popup shows the details of the baseline.

Compatible with JIRA

In JIRA, it is possible to link an issue to a specific baseline of the requirements. So your client can't change requirements on the fly!