14. A computer executable program stored on a computer-readable storage medium and configured to make a computer manage electronically recorded document files, the program comprising instructions for performing the steps of: a step for inputting information by an operator; a step for editing a virtual combination object based on the information inputted in said input step, the virtual combination object denoting an object that has a first data region and virtually combining document files, wherein the first data region includes information for managing the document files to be virtually combined, including an order relation between the document files, and a setting position of the index object to be set immediately before or immediately after the virtually combined document file, or immediately before or immediately after a page constituting the document file; a step for editing an index object based on the information inputted in said input step, the index object denoting an object that has a second data region and manages at least one or more document files included in the document files virtually combined by the virtual combination object or one or more pages constituting the document file, a s a subgroup in the virtual combination object, wherein the second data region includes information on setting for processing the subgroup and a parameter according to the process setting; and a step for managing and processing the document files based on the information recorded in the virtual combination object and the index object.
14. A computer executable program stored on a computer-readable storage medium and configured to make a computer manage electronically recorded document files, the program comprising instructions for performing the steps of: a step for inputting information by an operator; a step for editing a virtual combination object based on the information inputted in said input step, the virtual combination object denoting an object that has a first data region and virtually combining document files, wherein the first data region includes information for managing the document files to be virtually combined, including an order relation between the document files, and a setting position of the index object to be set immediately before or immediately after the virtually combined document file, or immediately before or immediately after a page constituting the document file; a step for editing an index object based on the information inputted in said input step, the index object denoting an object that has a second data region and manages at least one or more document files included in the document files virtually combined by the virtual combination object or one or more pages constituting the document file, a s a subgroup in the virtual combination object, wherein the second data region includes information on setting for processing the subgroup and a parameter according to the process setting; and a step for managing and processing the document files based on the information recorded in the virtual combination object and the index object. 22. The computer executable program according to claim 14 , wherein said virtual combination editing step decomposes the virtual combination of the virtual combination object to create the document file or document files not virtually combined by the virtual combination object or a new virtual combination object or new virtual combination objects in which at least part of the document files are virtually combined.