title: Cropping a PDF using Ghostscript 9.01
body: <p>I am not a programmer, but would like to learn how to crop a PDF using Ghostscript.</p>
  
  <p>I have installed Ghostscript 9.01 in my machine.</p>
  
  <p>Please guide me step by step process (starting from invoking Ghostscript) to crop a PDF with the specific coordinates.</p>
  
  <p>I am even new to Ghostscript.</p>