.. _PreviewDialog:

Preview Dialog
^^^^^^^^^^^^^^

This dialog is opened when you click on any of the **Preview** buttons. It shows any constraint violations that would apply if an edit would be preformed.

The dialog also shows the number of statements (triples) that would be added and deleted, as well as details about these triples in Turtle notation. You can switch between seeing the added and deleted triples separately and seeing them in a single "diff" viewer.

When a preview is performed, TopBraid will simulate the edits in a "sandbox" without actually changing any data.

To finish the dialog, you can either press the **Apply** button to assert the change to the asset collection or workflow, or just press **Close** to return to the previous screen without applying the change.

**Further Reading on TopBraid**

* :ref:`introduction`