Which evidence type is used to clarify uncertainties within a document?

Extrinsic evidence is crucial for clarifying uncertainties within a document, as it provides context and background that are not necessarily detailed within the text itself. This type of evidence includes information from outside the document that can help to interpret its contents more clearly. For instance, extrinsic evidence can encompass prior negotiations, surrounding circumstances, or other relevant communications that shed light on ambiguous terms or intentions.

Direct evidence establishes a fact directly; for example, a witness testifying to something they saw is an instance of direct evidence. Indirect evidence, on the other hand, allows for inferences to be drawn but does not establish a fact directly. Indispensable evidence isn't a standard term in this context and may not be recognized in legal or surveying frameworks, focusing instead on varying forms of evidence that can support claims or clarify issues. Thus, the use of extrinsic evidence specifically emphasizes its role in enhancing understanding and resolving uncertainties in documentation.