It's always annoyed me that the Windows DirectX diagnosis tool is called dxdiag when dx is a common abbreviation for diagnosis, so it should clearly be called dxdx.
Just needed to tell someone
Devs responding with DX² and rudely being funnier than me, @GulliverTruffle says "you can't/shouldn't do ² in variable names, which puts us back a good number of versions"
So ner