<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

print_args_or_input is a utility command that makes it easy to create a shell script that can be used either as a pipe or directly as a HackEgo command. Use as 'print_args_or_input "$@" | yourShellCode'. See also shebang_args_or_input.