[Gnuplot-info] How to "set offset" for y2 axis?

[Grant E. <gra...@gm...>]

I have a graph were I do

  set offset graph 0.1, graph 0.1, graph 0.1, graph 0.1;

and then plot two columns of a file: one x1y1, one x1y2. The offset
doesn't seem to be applied to the y2 axis. How do I set offset for the
secondary y axis? The manual implies this is not possible:

    Offsets

    Offsets provide a mechanism to put an empty boundary around the
    data inside an autoscaled graph. The offsets only affect the x1
    and y1 axes, and only in 2D plot commands.

Is there really no way to set offsets for secondary axes?