I think I know the answer already, but I'm going to ask anyway.

Overview:
I have an application where I will need to display multiple SVG images
on top of (or behind) one another. I will also need to manipulate
various elements on various images. The some of these layers may be
invisible until triggered by a user action.

 1. I can generate the visual effect I want with the <image/> element.
    a. This allows me to load multiple SVG files that I can map to the
       same space.
    b. However, I cannot find a way to "reach into" the SVG in the
       image to manipulate internal elements.

 2. I have seen the <multiImage/>/<subImageRef/> system. It be able to
    tie loading multiple images depending on zoom.
    a. I assume that I would have the same manipulation problems as
       with the <image/> element.
    b. The files are supposed to be viewable by other SVG viewers,
       although the manipulation features are only available in my
       application. I'm not sure how these elements would play with
       other viewers.

 3. There have been a few questions in the past on this list about
    layering JSVGCanvas objects and displaying one on top of another.
    a. I don't know if anyone has ever gotten this approach to work.
    b. I assume I could just walk a list of documents and manipulate
       all appropriate elements on each document.

Does anybody have any other ideas or comments on these ideas?

Thanks,
G. Wade

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