[texhax] centering a box on the margin line

[Peter King]

There must be an easy way to do this in plain TeX, but I haven't come up
with one. I have a rectangular graphic (actually a logo in an .eps file)
that I want to center on the line of the left margin, thusly:

============================================
  _____
  | X |
  |_Y_|
    
    |Blah blah margin line on the left
    |More text flush to margin line
    |Even more text and random babbling

============================================
Is there a straightforward way to do this? I suppose I could negative kern
the epsfbox into the margin, or something like that. But surely centering
a box on a given line (the margin line) must be an Old Solved Problem. 
Any help appreciated, even pointers on where to look. Thanks.

-- 
Peter King			 	peter.king at utoronto.ca
Department of Philosophy
215 Huron Street
The University of Toronto		    (416)-978-4951 ofc
Toronto, ON  M5S 1A2
       CANADA

http://individual.utoronto.ca/pking/

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