PDF file structure – unlike many other common document formats – provides natural, built-in protection for our intellectual property, ensuring unsolicited third parties can’t easily change or delete our content.
Despite this built-in file security, however, PDF files still do provide a meaningful way for document creators and viewers to interact and share ideas. The PDF annotations feature allows (authorized) viewers to provide feedback on a document’s contents by inserting new text (or other) objects at specific points calling out elements of the document’s original content.