Permanently Deleting Models and Files
You can permanently delete all versions of models and files in a Model Manager database by clicking the Delete Permanently button () in the Item section of the Home toolbar. You will be asked to confirm that you want to permanently delete all versions of the current selection of items in the The Databases Window or The Model Manager Window (depending on which window is focused). Any drafts that were created from selected models will also be permanently deleted.
Beware that this action cannot be undone. If you only intend to permanently delete all drafts of a model, and not the model itself, use the Permanently Delete All Drafts button () in The Maintenance Window.
Permanently Deleting a Version
You can permanently delete a single version of a model or file by right-clicking the version in The Versions Window or The Maintenance Window and selecting Permanently Delete Version (). This is useful if a particular version is unsuitable to keep in the database.
Since Model Manager does not duplicate unchanged data when saving versions of a model, you may often find that permanently deleting a single version does not reclaim much disk space.