title: How to make `set offsets` apply to certain axis?
body: <p>The gnuplot doc for <a href="http://gnuplot.sourceforge.net/docs_4.2/node209.html" rel="nofollow noreferrer">set offsets</a> is extremely terse and I cannot find how offsets interact with multiple x-axes or y-axes.</p>
  <p>I have 2 plots and they use x1y1 and x1y2, so there are 2 y-axes one on the left one on the right. Right now, when I add some top offset it applies to the plot which uses y1. How can I make it affect the plot which uses y2?</p>