Blame LICENSE

dcdadc
  ntapi: Native API core library
dcdadc
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dcdadc
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  Copyright (C) 2013,2014,2015,2017  Z. Gilboa
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dcdadc
  This library is currently released under the GPLv2 and GPLv3 (see
dcdadc
  COPYING.NTAPI for the relevant text). If you wish to use this
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  library with a different license, please contact the author
dcdadc
  at <writeonce at midipix dot org> and briefly describe the type
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  of license (or license exception) that you would like to obtain.