The dialog box shows an overview of the versions of the attachment of the current document.

Open in read-only mode: Use the Open in read-only mode button to open the attachment of a selected version in an external application.

Save file as: With this function, you can store versions of the attachment selected in a list of versions outside of ELO.

Compare: To compare two versions, select two entries in the versions overview list and then click Compare.

Check signature: For a signed attachment, you can check the signature with this button.

Delete version: Delete a version selected in the list.

The version is highlighted in red after deletion.

Restore: Restore a deleted version (red marker) via the Restore button.

The version is then displayed in the list without the highlighting.

OK: Click OK to save changes and close the dialog box.

Cancel: Click Cancel to close the dialog box without saving the changes.