DEF FNDplot_doc_new(OPTIONAL INTEGER Doc_type,Verbose)
!
! Creates a new DPlot document
!
! INPUT: (Optional) Doc_type: 0 = Standard xy diagram
! 1 = 1D statistics plot
! 3 = 3D random points (contour plot)
! Return value: Number of DPlot document (>0)
FNDplot_doc_new creates a new DPlot document and returns the DPlot document number (or 0 if the function failed).