     document.getElementById('testSpan'+i).getBoundingClientRect().left,
        document.getElementById('refSpan'+i).getBoundingClientRect().left, 1);
      // Hide successful tests.
      document.getElementById('test'+i).parentNode.style.display = 'none';
    }, lines[i]+' may NOT appear at line start if de and strict');
  }
  done();
}
</script>
<!--Notes:
The test creates a box with room for 6 characters, causing wrapping to occur either between the 6th and the 7th character, or before the 6th if the b