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www.reference.com/article/copy-text-pdf-file-9fb8d14e98035071

Text and images can be copied from a PDF file by using the Tools menu in Adobe Reader. Some PDFs are protected and it is not possible to copy from them directly.

www.reference.com/article/can-pdf-files-text-books-c47ce3c23e3e495e

Textbook Revolution, Bookboon.com, OpenStax College and The Global Text Project are among the many websites offering free textbooks for download in PDF format. Websites such as Project Gutenberg provide free PDFs of literary classics and other public domain books used i...

www.reference.com/article/pdf-mean-631b9ee03340e5c4

In the world of technology, PDF stands for portable document format. The purpose of this format is to ensure document presentation that is independent of hardware, operating systems or application software.

www.reference.com/article/print-pdf-c48734bb54a5694c

To print a file to PDF, download and install a virtual PDF printer. This PDF printer is necessary if the program that you are using does not give you the menu option to export or save the file you are currently working on to PDF.

www.reference.com/article/pdf-file-a95669db72e5b471

Portable Document Format is a file format created by Adobe that preserves formatting integrity across all platforms and may contain text, audio, video, links and form fields. The PDF file format is recognized and maintained by the International Organization for Standard...

www.reference.com/article/pdf-format-4f6ab5bdcb5e5fb1

PDF refers to portable document format, which is a type of electronic document file developed by Adobe Systems. The primary purpose of PDF is to enable sharing of electronic documents in a style that resembles printed documents.

www.reference.com/article/can-edit-pdf-324c21bc06073adf

You can edit a PDF using Adobe Acrobat XI software. Alternatively, convert the PDF into a Word file with Microsoft Word, edit the file in Word and then save it as a PDF.