 getBox("radical005").left,
                           v1, epsilon,
                           "mroot: kern before degree");
    }, "RadicalKernBeforeDegree");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v = 8000 * emToPx;
      assert_approx_equals(getBox("base0061").top - getBox("radical0061").top,
                           v, epsilon,
                           "msqrt: vertical gap");
      assert_approx_equals(getBox("base0062").top - getBox("radical0062").