The Prefix property specifies the prefix for a dimension label (that is, the text displayed before the dimension value).
Examples:
The following VBA example creates a rectangle and a linear dimension that is linked to the rectangle's snap ponts. A prefix is added to the dimension text.
Sub Test()
Dim shp1 As Shape, shp2 As Shape
Set shp1 = ActiveLayer.CreateRectangle2(0, 0, 5, 2.5)
Set shp2 = ActiveLayer.CreateLinearDimension(cdrDimensionHorizontal, shp1.SnapPoints(1), shp1.SnapPoints(3))
shp2.Dimension.Prefix = "AKM: "
End Sub