1 REDRAW
  Syntax: REDRAW

  Redraw the last picture you made with any changes you made via the
  `SET, COMMENT, KEY' or `DRAW' commands implemented.

  Note that what `REDRAW' actually does is to repeat the plotting
  commands that were used to make the picture. Thus if you change a
  histogram, by fetching in a new one with the same identifier or
  performing some operation on it after that histogram has been
  plotted, the new histogram will get drawn when you give the `REDRAW'
  command. Another, sometimes unexpected, side-effect is that if you
  are windowing and project an Ntuple several times with the same
  secondary identifier each time, but different cuts, the `REDRAW'
  command will plot the last histogram only for all the projections.

