The PRODUCT COPY command allows you to compress a sequential kit.
    If you do not have a kit in sequential format, you must first
    use the PRODUCT PACKAGE command to create a sequential kit from
    the product materials. Then you can use the PRODUCT COPY command
    to convert it to compressed format. You cannot create a kit in
    compressed format directly from a kit in reference format.

    Use the /FORMAT qualifier to determine the format of the product
    kits that you create. Use the /KIT_ATTRIBUTES=FORMAT qualifier to
    select kits of a particular format to be copied or converted.

    If you copy a product kit that is signed and has an associated
    manifest file in the source directory, both the kit and its
    manifest are copied to the destination directory. A manifest
    file is used for product kit validation. It must have a file name
    and file type that match the file specification of the product
    kit, with _ESW appended to the file type.