backward method
void
backward()
Moves the Bar Backward
Implementation
void backward() {
var out = StringBuffer('[');
var width = Console.columns - 2;
var before = width - position;
var after = width - before - 1;
for (var i = 1; i <= before; i++) {
out.write(' ');
}
out.write('=');
for (var i = 1; i <= after; i++) {
out.write(' ');
}
out.write(']');
Console.overwriteLine(out.toString());
}