LineFormat Object (Word)
Represents line and arrowhead formatting. For a line, the LineFormat object contains formatting information for the line itself; for a shape with a border, this object contains formatting information for the shape's border.
Remarks
Use the Line property to return a LineFormat object. The following example adds a blue, dashed line to the active document. There is a short, narrow oval at the line's starting point and a long, wide triangle at its endpoint.
With ActiveDocument.Shapes.AddLine(100, 100, 200, 300).Line
.DashStyle = msoLineDashDotDot
.ForeColor.RGB = RGB(50, 0, 128)
.BeginArrowheadLength = msoArrowheadShort
.BeginArrowheadStyle = msoArrowheadOval
.BeginArrowheadWidth = msoArrowheadNarrow
.EndArrowheadLength = msoArrowheadLong
.EndArrowheadStyle = msoArrowheadTriangle
.EndArrowheadWidth = msoArrowheadWide
End With