code: function (right) {
              var p = this.coords.p_pointer;
              var p_step = (this.options.max - this.options.min) / 100;
              p_step = this.options.step / p_step;
  
              if (right) {
                  p += p_step;
              } else {
                  p -= p_step;
              }
  
              this.coords.x_pointer = this.toFixed(this.coords.w_rs / 100 * p);
              this.is_key = true;
              this.calc();
          }
docs: Move by key
  
  @param right {boolean} direction to move