title: How do gnuplot margins work in multiplot mode?
body: <p>I am a bit confused about gnuplot margins. First of all I have no idea what units these things are pointing to. Are they pointing to the canvas coordinates OR are they a fraction of the canvas coordinates. Do they behave the same in gnuplot mode and multiplot mode?</p>
  
  <p>My problem arises when plotting some data in multiplot mode. I am plotting to the screen (wtx terminal). Let's just say I am bungling things badly - I get plots off the canvas, or very small unreadable plots.</p>
  
  <p>Without margins the first plot is flush against the top of the canvas, so naturally I want to push it down a bit.</p>
  
  <p>Can someone explain how gnuplot margins work and if they behave the same in multiplot mode.</p>