Placing a transparent gray rectangle region on a graph

The plotting is going well, however I need to place rectangle regions that are say grey yet transparent so that none of the graphical elements are blocked. How do I do this. Please be specific. I have tried the layout and the objects are opaque.

The rectangle regions are specified by a pair of opposite corner coordinates. Therefore, there is no other data.

Thanks

Lorenz H. Menke, Jr.
Try
SetDrawLayer /W=GraphName UserBack

before drawing your rectangle region. You should be able to see the graph's contents that are in front of this layer.

Stephen R. Chinn
Transparent fill colors are not yet supported.

I suggest placing the rectangle into a layer below the items you do not wish to cover up.

To draw manually into a layer, option (alt) click on the environment icon (tree symbol) in the tools.

Using the beta of 6.1, you can specify a transparent background for fill patterns (not solid colors):

Draw patterns can be transparent using "magic" white background color value of
(65534,65534,65534). Does not work with emf or wmf export.