CalloutFormat.Border Property (Word)
Returns or sets whether the text in the specified callout is surrounded by a border. Read/write MsoTriState .
expression Required. A variable that represents a 'CalloutFormat' object.
This example adds an oval to the active document and a callout that points to the oval. The callout text won't have a border, but it will have a vertical accent bar that separates the text from the callout line.
Dim docActive As Document Set docActive = ActiveDocument With docActive.Shapes .AddShape msoShapeOval, 180, 200, 280, 130 With .AddCallout(msoCalloutTwo, 420, 170, 170, 40) .TextFrame.TextRange.Text = "My oval" With .Callout .Accent = True .Border = False End With End With End With