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.
Document Certification â When you certify a PDF, you indicate that you approve of its contents. â Microsoft .NET Framework 2.0 available here. The license for PDF Signer is a lifetime license. There is no additional cost like monthly / annual fees or fees per use.