| April, 1995 | Examination start
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| May, 1995 | Basic design book(0 edition)
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| September, 1995 | Function specifications(1 edition)
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| December, 1995 | Tender Ver.1.0(unified the OS and programs of a process)
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| January, 1996 | structure specifications(0 edition)
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| June, 1996 | Function specifications(1.1 edition)
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| June, 1996 | Basic design book(2 edition)
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| December, 1996 | Tender Ver.2.0(Resource "data" and the single process environment that used basic function, a.out of permanence control)
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| October, 1997 | Function specifications(2 edition)
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| December, 1997 | Tender Ver.3.0(Heterovirtual storage, realization of multi-processing environment)
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| June, 1998 | Function specifications(3.2 edition)
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| December, 1998 | Tender Ver.4.0(Realization of a basic function of interprocess communication)
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| March, 1999 | Basic design book(4.1 edition)
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| March, 1999 | Function specifications(4.2 edition)
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| December, 1999 | Tender Ver.5.0(Realization of a basic function of resources "plate" (former name "data") which does permanency of data)
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| December, 2000 | Tender Ver.6.0(Realization of a process movement function to the remote computer which used Myrinet)
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| December, 2001 | Tender Ver.7.0
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| March, 2002 | Tender Ver.7.1
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| December, 2002 | Tender Ver.8.0
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| March, 2003 | Tender Ver.8.1
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| December, 2003 | Tender Ver.9.0
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| March, 2004 | Tender Ver.9.1
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| December, 2004 | Tender Ver.10.0
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| March, 2005 | Tender Ver.10.1
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| December, 2005 | Tender Ver.11.0
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| March, 2006 | Tender Ver.11.1
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| December, 2006 | Tender Ver.12.0
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| March, 2007 | Tender Ver.12.1
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| December, 2007 | Tender Ver.13.0
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| March, 2008 | Tender Ver.13.1
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| December, 2008 | Tender Ver.14.0
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| March, 2009 | Tender Ver.14.1
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| December, 2009 | Tender Ver.15.0
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| March, 2010 | Tender Ver.15.1
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| December, 2010 | Tender Ver.16.0
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| March, 2011 | Tender Ver.16.1
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| December, 2011 | Tender Ver.17.0
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| March, 2012 | Tender Ver.17.1
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| December, 2012 | Tender Ver.18.0
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| March, 2013 | Tender Ver.18.1
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| December, 2013 | Tender Ver.19.0
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| March, 2014 | Tender Ver.19.1
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| March, 2015 | Tender Ver.20.05
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| December, 2015 | Tender Ver.21.0
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| March, 2016 | Tender Ver.21.1
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| December, 2016 | Tender Ver.22.0
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| December, 2017 | Tender Ver.23.0
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| March, 2018 | Tender Ver.23.1
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| December, 2018 | Tender Ver.24.0
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| March, 2019 | Tender Ver.24.1
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| December, 2019 | Tender Ver.25.0
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| March, 2020 | Tender Ver.25.1
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| December, 2020 | Tender Ver.26.0
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| March, 2021 | Tender Ver.26.1
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| December, 2021 | Tender Ver.27.0
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| March, 2022 | Tender Ver.27.1
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| January, 2023 | Tender Ver.28.0
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| March, 2023 | Tender Ver.28.1
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| January, 2024 | Tender Ver.29.0
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| March, 2024 | Tender Ver.29.1
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