title: Separating layers in PDF files
body: <p>Does anyone know of a way to use the command line in Linux to separate and merge layers (optional content, section 8.11 of <a href="http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf" rel="nofollow">ISO 32000:2008</a>) from a PDF file?</p>
  
  <p>I am mostly interested in files created with Adobe Illustrator - apologies if this is too far off-topic, I am quite desperate. I've posted this also to serverfault a while back, but no answers.</p>
  
  <p>I have come across a reference to cslayer.dev in <a href="http://svn.ghostscript.com/ghostscript/tags/ghostscript-9.00/doc/Develop.htm#PDF_interpreter" rel="nofollow">here</a> but I cannot find any further documentation.</p>