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Test Info:

<!DOCTYPE html>
<html class="reftest-wait">
<head>
<title>subscript</title>
<meta charset="utf-8"/>
<script type="text/javascript">
function verifyItalicCorrections()
{
var epsilon = 2;
for (var i = 0; i < 8; i += 2) {
var sub = document.getElementById("s" + i);
var sup = document.getElementById("s" + (i+1));
var italicCorrection =
sup.getBoundingClientRect().left - sub.getBoundingClientRect().left;
if (italicCorrection < epsilon) {
return false;
}
}
return true;
}
function doTest()
{
if (verifyItalicCorrections()) {
document.body.style.background = "#5f5";
}
document.documentElement.removeAttribute("class");
}
window.addEventListener("MozReftestInvalidate", doTest);
</script>
</head>
<body style="background: #f00; font-size: 50px;">
<div>
<math>
<msubsup>
<mi mathbackground="#5f5">f</mi>
<mspace id="s0" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s1" width="50px" height="50px" mathbackground="blue"/>
</msubsup>
</math>
</div>
<br/>
<div>
<math>
<mmultiscripts>
<mi mathbackground="#5f5">f</mi>
<mspace id="s2" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s3" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s4" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s5" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s6" width="50px" height="50px" mathbackground="blue"/>
<mspace id="s7" width="50px" height="50px" mathbackground="blue"/>
</mmultiscripts>
</math>
</div>
</body>
</html>