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{
// Place your snippets for javascript here. Each snippet is defined under a snippet name and has a prefix, body and
// description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the
// same ids are connected.
// Example:
// "Print to console": {
// "prefix": "log",
// "body": [
// "console.log('$1');",
function onStart( ) {
var x = 0;
var y = 0;
var forward = true;
while (true) {
if (microbit.isOn(x, y)) {
microbit.off(x, y);
microbit.off(4-x, y);
}else {