Just dump these seven lines into a module in your Normal template.
Since the name of this sub is "AutoOpen," it will execute whenever you
open a document. See more at
http://jyeee.blogspot.com/2006/04/fr...e-reading.html

Sub AutoOpen()
With ActiveWindow.View
.ShowRevisionsAndComments = False
.RevisionsView = wdRevisionsViewFinal
End With
CommandBars("Reviewing").Visible = False '''OPTIONAL: turns off
Reviewing toolbar
End Sub

This is the only thing that worked for me, clicking on Tools | Options
| Security |
and unchecking the "Make hidden markup visible when opening or saving"
box did NOT work.

This should be on ONE line: "CommandBars("Reviewing").Visible = False
'''OPTIONAL: turns off Reviewing toolbar"; "Reviewing toolbar" should
not be on its own line.