title: Selecting Text in PDF file (iphone)
body: <p>I'am working in a PDF reader for iphone and
  I want to learn how to Select a text in PDF,
  I was able to parse a PDF Document(using CGPDFContentStreamRef and CGPDFScannerRef), and to search for words in the pdf file, but i can't highlight  the word in the PDF Document.
  So, how can I locate a word in the PDF View and How to select it?</p>