DEF FNDplot_winmode(INTEGER Winmode, OPTIONAL INTEGER Flags)
!
! Sets the mode of the DPlot application window
!
! INPUT:
! Winmode = Window mode of DPlot Application
! 1 = Hide DPlot Window (default mode after DPlot_start)
! 2 = Restore DPlot Window (interactive mode)
! 3 = Maximize DPlot Window
! Flags = Bit 0 (Decimal 1): Show dialog box explaining interactive mode
! Other values are reserved for future use
FNDplot_winmode sets the mode of the DPlot window, e.g. in order to enter interactive mode.