Robert Morelli wrote:
> I'm working on an OCaml application which I'd like 
> to do the following:  load an existing postscript 
> file from disk, launch a window in which the 
> document is displayed,  and allow the user to select a
> rectangle on a page of the document using the mouse
> (and of course have access to the bounds of the rectangle
> within the application).  What libraries/tools are 
> available to do such a thing?

I once wrote a program which only displayed postscript, and I used 
ghostscript. That is, my program calls Unix.open_process_out, with the 
expected arguments. This is not handy at all, since interfacing with 
ghostscript is painful, but I do not know any better solution.
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