| The PLplot Plotting Library: Programmer's Reference Manual | ||
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plgra: Switch to graphics screen
      Sets an interactive device to graphics mode, used in conjunction with
      pltext to allow graphics and text to be interspersed.  On a device
      which supports separate text and graphics windows, this command
      causes control to be switched to the graphics window.  If already in
      graphics mode, this command is ignored.  It is also ignored on
      devices which only support a single window or use a different method
      for shifting focus.  See also pltext.