title: Exact meaning of dashtype index in the Gnuplot 5.0?
body: <p>I got a problem in Gnuplot 5.0, the dashtype index, such as ``set dashtype 1 (2,5,2,15)` in the manual. </p>
  
  <p>My question is: what do these numbers in parenthesis exactly mean? I tried to change them to get a feeling, but it would be great to know the exact meaning. </p>
  
  <p>My actual problem is, that simply using <code>dashtype N</code>, gives lines which look very different from the previous 4.6 version, unfortunately. I just try to reproduce the plots which were made in gnuplot 4.6.</p>