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.
A tagged. PDF (ISO 32000-1:2008 14.8) includes document structure and semantics information to enable reliable text extraction and accessibility. Technically speaking, tagged PDF is a stylized use of the format that builds on the logical structure framework introduced in PDF 1.3.