NAME
	  DtShapeIsDoubleSided - Determine whether the polygons of a
	  shape are double sided.


     SYNOPSIS
	  #include <Dt.h>


	  int  DtShapeIsDoubleSided(int shapeID)


     DESCRIPTION
	  DtShapeIsDoubleSided() tells if the polygons of the given
	  shape are double sided as it was set in the 'Render stats'
	  window.

     DIAGNOSTICS
	  Returns 1 if the polygons of the shape are double sided.
	  Otherwise returns 0.

     FILES
	  Link with -lDtOMio