> For the complete documentation index, see [llms.txt](https://docs.contextual.io/documentation-and-resources/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.contextual.io/documentation-and-resources/components-and-data/object-types/object-type-details/features.md). # Features Depending on your [service plan](https://www.contextual.io/pricing), you have two optional features you can enable for your Object Types. #### Audit Trail Audit Trails provide a comprehensive history of all changes to a given record. #### Record Versioning Record versioning allows for tracking of historic versions of records and roll-back to previous data.

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