Abstract: A system and method for clause and clause cluster classification for structured document analysis, interpretation, annotation, versioning and construction. The system and method can analyse one or more structured documents and parse the documents by clause, and assign each clause a clause category and clause cluster category. The clauses of similar structured documents can then be compared and documents can be flagged for variance in clause text, clause content, and the presence or absence of clauses in expected categories for the document type. By organizing clauses and clause language in a digital platform, the present system is capable of rapid document analysis and presentation of like clauses and related clause and clause cluster information for expediting document drafting, version tracking, and document analysis.