OS NEXTSTEP, macOS, iOS Linux Frameworks App Kit, Cocoa Editor/Environment Emacs Music Trumpet Wind band Composition Arrangement Programming Languages Objective-C Swift Ruby Haskell Julia Rust Emacs Lisp BASIC Keyboards Happy Hacking Keyboard Assignment Masui special (assigning ';' key to RET) The control key is in front of ',' key. The right side of A key is ';'. The right side of Z key is delete