title: Merge 2 pdf files and preserve forms
body: <p>I'd like to merge at least 2 PDF files into one while preserving all the form elements in the original PDFs. The form elements include text fields, radio buttons, check boxes, drop down menus and others. Please have a look at this sample PDF file with forms:</p>
  <p><a href="http://foersom.com/net/HowTo/data/OoPdfFormExample.pdf" rel="nofollow noreferrer">http://foersom.com/net/HowTo/data/OoPdfFormExample.pdf</a></p>
  <p>Now try to merge it with any other arbitrary PDF file.</p>
  <p>Can you do it?</p>
  <p><strong>EDIT:</strong> As for the implementation, I'd ideally prefer a command line solution on a linux plattform using open source tools such as 'ghostscript', or any other tool that you think is appropriate to solve this task.</p>
  <p>Of course, everybody is welcome to supply <em>any</em> working solution to this problem, including a coded solution that involves writing a script which makes some API calls to a pdf-processing library. However, I'd suggest to take the path of least resistance first (CMD Solution).</p>
  <p>Best Regards</p>
  <p><strong>EDIT #2:</strong> Well there are indeed several CMD tools that merge PDFs. However, these tools don't seem to, AFAIK, to <strong>preserve the forms</strong> in the original PDFs! These tools appear to simply just concatenate the printouts of all those PDFs into a single Printout, which is then presented as a single PDF.</p>
  <p>Furthermore, If you printout a PDF file with forms into a file, you lose all the forms in it. This clearly not what I'm looking for.</p>