Actually Ada is quite unusual in that the official ISO standard has always been licensed under terms that permit unrestricted redistribution and even modificati

Actually Ada is quite unusual in that the official ISO standard has always been licensed under terms that permit unrestricted redistribution and even modification; it is AFAIK the only ISO language standard that you can install as a package[1][2] from Debian's "main" repository. The language is thus more free than ISO C and C++, where everybody googles for "draft" pdfs and hopes their content does not substantially differ from the actual standard. [1] https://packages.debian.org/jessie/ada-reference-manual-2005 https://packages.debian.org/jessie/ada-reference-manual-2005 [2] https://packages.debian.org/jessie/ada-reference-manual-2012 https://packages.debian.org/jessie/ada-reference-manual-2012