Method getBg

src/server/web/public/terminal.js:4084–4086

(e3)

            return this._data[3 * e3 + 1];
          }
          getBg(e3) {
            return this._data[3 * e3 + 2];
          }
          hasContent(e3) {
            return 4194303 & this._data[3 * e3 + 0];
          }