During packing/unpacking procedure of pack200 command the content of the jar file may be altered which makes signature of the signed jar file invalid. The pack200 command can perform "normalization" to make jar file invariant to the further packing/unpacking operations. We need to add to the jar command an ability to produce such file from the very beginning to allow eliminating one extra step in producing signed jar files that are suspected to be packed. For that we will need additional command line option that will turn that feature on. By default this feature should be disabled to eliminate the possibility of performance degradation of the jar command.