The mapnik "map" and mapnik "layers" each have an srs (spatial reference 
system) attribute. 
If the srs of a layer differs from the map srs does mapnik automatically 
reproject the layer data 
to the map's srs when rendering? Or does one have to manually reproject somhow?
Assuming vector datasources

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Samuel M. Smith Ph.D.
242 East 600 North, Lindon Utah 84042-1662 USA
801-768-2768 voice
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"The greatest source of failure and unhappiness in the world is 
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