title: how to recall an integer in a string in gnuplot
body: <p>I am just trying to recall an integer in a string as below;</p>
  <pre><code>x=1
  y=4
  $Data &lt;&lt;EOD
  12 x
  22 y
  EOD
  print $Data
  </code></pre>
  <p>Right now, when I output the above lines, it would print</p>
  <pre><code>12 x
  22 y
  </code></pre>
  <p>However, I am interested to see the output when I print $Data like;</p>
  <pre><code>12 1
  22 4
  </code></pre>
  <p>I used the $ sign behind the integers x and y but it didn't work and same is true using quotation marks.
  Is there anyway to get around it?</p>