*UnZip:
 -?              display syntax
 -d dir          destination directory
 -debug          turn debug on
 -q              quiet
 -quit command   quit command
 -X              extract user account metadata
 -Z              only extract metadata (extract envelope/manifest)


*Zip:
-#               compression type
-?               display syntax
-debug           turn debug on
-i@file          Input file with list of files to include
-nozipdir        Don't add a zip directory
-p directory     prepend directory to objects in archive
-q               quiet
-quit command    quit command
-r               recurse
-t dd/mm/yyyy    Only store files modified on or after the date
-v<n>            Verbosity level
-C flag          CRC debug flag
-D               Don't store directory objects
-X               Store user account metadata


Need:
*Zip:
-pre129 option to generate zips with extra field length 24+x instead of 20+x
-v <various> - single line status, etc.

*ZipDiff:
-<something> - what to compare when diffing