title: Saving plots with "≤" and "≥" symbols in R
body: <p>I have a strange problem: </p>
  
  <p>I am working on a plot that in a legend text contains "≥" symbol. For example, <code>"x ≥ 2"</code>. Interestingly, the symbol appears correctly when I plot it using the R graphic device, but it appears incorrectly when I save it as PDF or EPS. </p>
  
  <p>Any suggestions how can I save it in PDF / EPS correctly?</p>