The AutoBitmap contains all the properties of imported bitmaps. Owned by the AutoShapes Collection.
This example shows how to import an image file into a Grapher plot as an AutoBitmap object
'Declares GrapherApp as an object
Dim GrapherApp As Object
'Creates an instance of the Grapher Application
'object and assigns it to the variable named "GrapherApp"
Set GrapherApp = CreateObject("Grapher.Application")
'Makes Grapher visible
GrapherApp.Visible = True
'Declares Plot as an object
Dim Plot As Object
'Creates a plot document in Grapher and
'assigns it to the variable named "Plot"
Set Plot = GrapherApp.Documents.Add(grfPlotDoc)
'Declares Shapes as an object
Dim Shapes As Object
'Assigns the AutoShapes collection to
'the variable named "Shapes"
Set Shapes = Plot.Shapes
'Declares Bitmap1 as an object
Dim Bitmap1 As Object
'Import an image file As a Bitmap Object
Set Bitmap1 = Plot.Import(GrapherApp.Path + "\UserImages.bmp")