DOCUMENT PROCESSING METHOD

PROBLEM TO BE SOLVED: To provide a method for simply and effectively perform document processing of setting links to mutually refer to locations in an original document file and a new document file relevant to each other, by applying hierarchized numbers to indexes, captions of diagrams, annotations, etc. in a plurality of document files as consecutive numbers across respective document files and by creating a new document file such as a reference chart composed of the indexes, the captions of the diagrams, the annotations, terminologies, index terms, etc.SOLUTION: A document processing method comprises the steps of: creating a tree structure definition that shows relations between a plurality of document files with an edit unit provided on a computer, reading the plurality of document files with a computer program and combining the files into one document file using the tree structure definition, applying consecutively hierarchized numbers to markup places in the combined document files, and dividing the combined document files after consecutive numbers are applied to the files into the plurality of original document files.