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In page Ukrainian language:

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After the beginning of "perestroika", the issue of improving Ukrainian spelling became relevant again: the editing of the spelling code was started by the Orthographic Commission at the LMM of the USSR Academy of Sciences. The project was also discussed in the newly established Ukrainian Language Society. T. Shevchenko (headed by Dmytro Pavlychko). The new version was approved on 14 November 1989, and published in 1990. The main achievements were the restoration of the letter ґ and the accusative case (in Soviet times it was optional and was called the accusative form).[citation needed]