Method, system, and program product for analyzing a generation program for generating document information consisting of a plurality of document components. The the generation program contains commands for generating the document components, contained in the document information. The information processing system includes: a correspondence information generator for executing the generation program and generating correspondence information which indicates correspondence between the plurality of generating commands and document components generated by the generating commands; a selector for selecting any of the plurality of document components at the instruction of a user; and a command information output unit for selecting, based on the correspondence information, the generating command which has generated the document component selected by the selector and outputting information for identifying the generating command.