?activewindow.view.revisionsballoonwidthtype

activewindow.view.revisionsballoonwidthtype=0

activewindow.view.revisionsballoonwidth=10

activewindow.view.revisionsballoonwidthtype=1

activewindow.view.revisionsballoonwidth=200

' set your preferred measurement type and width here.
' NB, there seems to be a minimum anyway, but that may depend on things I have
' not looked at such as screen size and so on.
' The numbers Word reports are the numbers you have set, not the values
' it has actually set the width to.
'Const preferredBalloonWidthType As Integer = WdRevisionsBalloonWidthType.wdBalloonWidthPoints
'Const preferredBalloonWidth As Single = 300
Const preferredBalloonWidthType As Integer = WdRevisionsBalloonWidthType.wdBalloonWidthPercent
Const preferredBalloonWidth As Single = 25

Sub autoopen()
Call changeBalloonSettings
End Sub

Sub changeBalloonSettings()
  With ActiveWindow.View
    .RevisionsBalloonWidthType = preferredBalloonWidthType
    .RevisionsBalloonWidth = preferredBalloonWidth
    ' debug check
    'If .RevisionsBalloonWidthType = WdRevisionsBalloonWidthType.wdBalloonWidthPercent Then
    '  MsgBox "Percent: " & .RevisionsBalloonWidth
    'Else
    '  MsgBox "Points: " & .RevisionsBalloonWidth
    'End If
  End With
End Sub

Sub fixupNormaldotm()
' Sets the Normal template to have the settings we would like
' for future documents
' to run this, start word and ensure that a single blank doument,
' based on Normal.dotm, is open (this is by default what you get
' when you start the Word application without e.g. double-clicking
' on a doument in Finder)
Dim d As Word.Document
Dim t As Word.Template
Set t = ActiveDocument.AttachedTemplate

Set d = Documents.Open(t.FullName)
' autoopen should run, so that's all we need. If you removeed
' autoopen, uncomment the following line:
call changeBalloonSettings
d.Save
d.Close
Set d = Nothing
Set t = Nothing
End Sub