/sys$common/syshlp/helplib.hlb
PRODUCT, UNDO, PATCH
 *Conan The Librarian 

    Uninstalls patches or mandatory updates from your system. This
    command uses the recovery data sets that were created by the
    PRODUCT INSTALL command when these patches were installed. The
    associated recovery data sets are deleted at the conclusion of
    the operation.

    Format

      PRODUCT UNDO PATCH  [/qualifiers]

  Additional Information (explode) :

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