If you want to force "Original" for all documents, you can add the following macros to your Normal template:
Code:
Sub AutoOpen()
With ActiveWindow.View.RevisionsFilter
.Markup = wdRevisionsMarkupNone
.View = wdRevisionsViewOriginal
End With
End Sub
Sub AutoNew()
With ActiveWindow.View.RevisionsFilter
.Markup = wdRevisionsMarkupNone
.View = wdRevisionsViewOriginal
End With
End Sub
For assistance with the installation, see
http://www.gmayor.com/installing_macro.htm.