The default value of n is zero. For example in 3-d, 'PD0D1D2' displays facets in the negative octant. If no facets match, the closest facet is returned. In 2-d, 'd G PD2' displays the Delaunay triangulation instead of the corresponding paraboloid. Be careful of placing 'Dk' or 'dk' immediately after a real number.
Some compilers treat the 'D' as a double precision exponent.
The facets with area at least n are marked good for printing. This may be useful for approximating a hull . Unless ' PG ' is set, ' Pg ' is automatically set. Option ' Pg ' only prints good facets that also meet ' Pdk ' and ' PDk ' options. It is automatically set for options ' PAn ' and ' PFn '.