../code/conceptPage.scroll id quexal name quexal appeared 2007 tags esolang paper http://hci.cs.tufts.edu/tern/horn-jacob-tei07.pdf description Quetzal (pronounced ket-sal) is a tangible programming language designed for children and novice programmers to control LEGO MINDSTORMS robots. lab Tufts University fileType text country United States