Abstract: An application package device with which a user can perform test customization without causing other users inconvenience before actual customization. First, a customization defining section stores customization information in either an individual customization information database or a shared customization information database. At the time of customization, a customization performing section searches the individual customization information database for customization information under the keywords of a user name and an object name such as an image name and a form name. When succeeding in the searching, the customization performing section performs the customization processes on the basis of the retrieved customization information. On the other hand, when failing in the searching, the customization performing section searches the shared customization information database for the customization information under the keyword of the object name.

Abstract: Command analysis means 3, upon perception of a save command, calls commit means 4, currency information saving means 6 and variables information saving means 8, and after that calls stack information saving means 10. Each called means commits an output file, or saves the currency information of an input file, variables information or stack information. The command analysis means 3, upon perception of a restore command, calls rollback means 5, currency information restoring means 7 and variables information restoring means 9, and after that calls stack information restoring means 11. Each called means rolls back the output file, or restores the currency information of the input file, variables information or stack information.