Sub Demo()
Application.ScreenUpdating = False
Dim Rng As Range
With ActiveDocument.Range
  With .Find
    .ClearFormatting
    .Replacement.ClearFormatting
    .Text = "<[A-Z0-9.\-]@[A-Z0-9.\-]@[DE]*>"
    .Replacement.Text = ""
    .Forward = True
    .Wrap = wdFindStop
    .Format = False
    .MatchWildcards = True
  End With
  Do While .Find.Execute
    Set Rng = .Duplicate
    With Rng
      .End = .Paragraphs(1).Range.End - 1
      .End = .Start + Len(Split(.Text, " ")(0))
      .Collapse wdCollapseEnd
      .End = .Paragraphs(1).Range.End - 1
      If UBound(Split(.Text, " ")) > 1 Then
        If Split(.Text, " ")(1) = "REV" Then .End = .Start + 10
      End If
    End With
    .End = Rng.End
    .Font.Bold = True
    .Collapse wdCollapseEnd
  Loop
End With
Application.ScreenUpdating = True
End Sub