What is NOT a principle of forensic document examination?

The principle that is not a part of forensic document examination is the collection of DNA evidence. Forensic document examination primarily focuses on analyzing and validating documents, which includes assessing the authenticity of the document, analyzing handwriting, and detecting any alterations made to the document.

Authenticity verification ensures that a document is what it claims to be, while handwriting analysis examines the style, pressure, and formation of written text to identify the writer. Detection of alterations involves identifying and analyzing any changes made to a document that could affect its integrity or meaning.

In contrast, the collection of DNA evidence pertains to biological samples and is more commonly associated with forensic biology or forensic genetics. This distinction highlights that DNA collection is not relevant to the discipline of document examination, which centers exclusively on textual and visual aspects of documents rather than biological evidence.