So it is possible that someone owns the surface, another owns the mineral rights, another the royalties to those minerals, another the timber, etc. Each such fee simple owner has the exclusive ownership free and clear of any condition or restriction.
As such, documents created with require compliance with certain standards to ensure that others have the ability to open and view these files. This is especially true when PDF is used for special applications, such as professional printing or engineering documents, or even when itâs used for long-term archiving. As subsets of the ISO standards, PDF/X, PDF/A, and PDF/E all dictate standards compliance.
Invented by Adobe, PDF is now an open standard maintained by the International Organization for Standardization (ISO). PDFs can contain links and buttons, form fields, audio, video, and business logic. They can also be signed electronically and are easily viewed using free Acrobat Reader DC software. We invented PDF. In 1991, Adobe cofounder Dr. John Warnock launched the paper-to-digital revolution with an idea he called The Camelot Project.