Relating to or consisting of documents; presenting information in the form of documents or factual records.
From document plus the suffix -al (meaning 'relating to'). Used in formal contexts to describe things that are document-based rather than narrative or interpretive.
Documental is the adjective form that scholars and archivists prefer when they want to emphasize 'this is built from actual records,' not just somebody's interpretation—it's the academic way of saying 'we've got receipts.'
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