# Repositories

Rule sets that work together for a common purpose or have a common theme can be grouped together into a repository.

Repositories can selectively export their rule sets, content and data to be used in other repositories.

Below is an example of the rule set `User_Agent_Detection.xml` being exported. This means that only this rule set will be visible when the repository “**User Agent Detection**” will be included in another repository.

<figure><img src="https://2423451286-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F42mDa58RoaDxb6t8mbaI%2Fuploads%2Fgit-blob-986d8530b1a2383139c5f3a5ca14b96afa87ae44%2Fimage.png?alt=media" alt=""><figcaption><p>Selecting a rule set for a repo</p></figcaption></figure>