Sub UpdateDocuments()
Application.ScreenUpdating = False
Dim strFolder As String, strFile As String, wdDoc As Document
strFolder = GetFolder
If strFolder = "" Then Exit Sub
strFile = Dir(strFolder & "\*.docx", vbNormal)
While strFile <> ""
  Set wdDoc = Documents.Open(FileName:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
  With wdDoc
    With .Range.Find
      .ClearFormatting
      .Replacement.ClearFormatting
      .Forward = True
      .Wrap = wdFindContinue
      .Format = False
      .MatchCase = False
      .MatchWholeWord = False
      .MatchWildcards = False
      .MatchSoundsLike = False
      .MatchAllWordForms = False
      .Text = "["
      .Replacement.Text = " ~"
      .Execute Replace:=wdReplaceAll
      .Text = "]"
      .Replacement.Text = "~"
      .Execute Replace:=wdReplaceAll
      .MatchWildcards = True
      .Text = "~*~"
      .Replacement.Text = " "
      .Execute Replace:=wdReplaceAll
    End With
    .Close SaveChanges:=True
  End With
  strFile = Dir()
Wend
Set wdDoc = Nothing
Application.ScreenUpdating = True
End Sub
 
Function GetFolder() As String
Dim oFolder As Object
GetFolder = ""
Set oFolder = CreateObject("Shell.Application").BrowseForFolder(0, "Choose a folder", 0)
If (Not oFolder Is Nothing) Then GetFolder = oFolder.Items.Item.Path
Set oFolder = Nothing
End Function