Redraw all visualization windows.
Redraw the plots in the active visualization window. all causes the plots in all windows to be redrawn. Calling redraw without arguments causes plots in the currently active visualization window to be redrawn.
Issue this command to redraw plots if they have become garbled on the screen. This command will also force some changes which apply to future plots (like changes to light sources or color tables) to apply to the current plot.