title: gnuplot - adjust size of key/legend
body: <p>How do I adjust the size of the legend in gnuplot (4.6.0)? By this I mean the size of the lines and <em>not</em> just the font size. When I switched from the pdf to pdfcairo terminal the size suddenly jumped and caused the key to overlap the points of interest. (I needed cairo to enable unicode.)</p>
  
  <p>An answer I have just invented is (e.g.):</p>
  
  <pre><code>set key font ",8"
  set key spacing 0.5
  </code></pre>
  
  <p>Is there a better way?</p>