st likely IE in use.')
        }
    };

    //fn.hasMemory = function () {
    //    if (typeof memory === 'undefined') return;
    //    if (typeof memory[indexGroup] === 'undefined') return;
    //    if (typeof memory[indexGroup][indexItem] === 'undefined') return;
    //    if (memory[indexGroup][indexItem] !== true) return;
    //    return true;
    //};

    fn.hasMemory = function () {
        // https://stackoverflow.com/questions/41902495/javascript-multidimensional-array-is-valid

