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A game called "Domain/Jewelbox" for Apollo Domain/OS was published by Yoshihiro Satoh in 1990. David Cooper and Jose Guterman reimplemented it for X11 in 1982 under the name "xjewel". See the xjewel(6) manual page for more details. 207.180.169.36 (talk) 20:45, 17 September 2023 (UTC)[reply]