Hi, I am using PDFBox to extract text from PDF files. I noticed that, for some PDF files(usually old PDFs), when you select some text using your mouse in the PDF reader application (I use Evince on Ubuntu), some other text come up, different from the text when you don't select them.
I find that PDFBox sometimes actually extract the selected text, not the text when you don't select them. Could anybody tell me why this happen? Am I understood?
