devAskNewPage(ask = NULL)NULL or a logical value.  If TRUE, the user
    will in future be prompted before a new page of output is started.ask is logical.
The default argument just returns the current setting and does not change it.
  The default value when a device is opened is taken from the
  setting of options("device.ask.default").
  The precise circumstances when the user will be asked to confirm a new
  page depend on the graphics subsystem.  Obviously this needs to be an
  interactive session.  In addition recording needs to be in
  operation, so only when the display list is enabled (see
  dev.control) which it usually is only on a screen device.
plot.new, grid.newpage