
 Geometry Class Reference (Site not responding. Last check: 20071013) 
  By default all top level Grids, which is to say, all Grids which are spawned from a "Region" take the same Geometry as the Region, itself. 
  All Regions within a dataset have the same Geometry but not necessarily the same topology (boundary conditions). 
  A Geometry is defined by the the dimensionality (an int) the metric type (cartesian, spherical, etc), the boundary type (periodic, or cartesian), the space type (real, fourier, etc.) and the limits of the coordinates... 
 www.physics.drexel.edu /BASIN/docs/classGeometry.html (242 words) 
