> For the complete documentation index, see [llms.txt](https://help.screena.ai/resources/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.screena.ai/resources/faq/security-and-audit/does-screena-provide-versioning-capabilities.md).

# Does Screena provide versioning capabilities?

Yes, every version of a watchlist record is kept in memory and corresponds to a **revision numeric value**. In addition to the revision value, every record is tagged with its creation date/time and updated date/time. Consequently, you can access any event affecting a record including:

* the current revision (i.e. most recent published version),
* any corrections or enhancements, and
* any other changes made to the record in question.

The first version of a record is always numbered as revision number 1.

We also keep in memory the date/time when a record was last matched to manage deltas as needed for [periodic screening](https://developer.screena.ai/#periodic-screening).