This page contains a Javascript interpreter for the esoteric programming language Sceql. Sceql was designed by an American programmer known as ‘Graue’, as a sequel to his Qdeql language, intended to be more usable. The queue in Sceql can never decrease in size and is initialised with one zero byte, making the implementation of an interpreter easier by removing special cases. The specification does not define the behaviour of unknown instructions, and this interpreter ignores unknown instructions. The example code is the first program written in Sceql, and outputs an exclamation mark.