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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<title>visibility</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="help" href="https://w3c.github.io/mathml-core/#css-styling">
<link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
<link rel="match" href="visibility-005-ref.html"/>
<meta name="assert" content="Verify that visibility=hidden is used for normal, stretchy and large operators.">
<style>
math {
font: 20px/1 Ahem;
}
@font-face {
font-family: operators;
src: url("/fonts/math/operators.woff");
}
mo {
font-family: operators;
}
</style>
</head>
<body>
<p>Test passes if you see a green square.</p>
<div style="background: green; color: red; width: 200px; height: 200px;">
<math>
<!-- unstretched operators -->
<mo style="visibility: hidden">⥯</mo>
<mo style="visibility: hidden">+</mo>
<mo style="visibility: hidden">-</mo>
</math>
<math displaystyle="true">
<!-- large operator -->
<mo largeop="true" style="visibility: hidden">⥯</mo>
</math>
<math>
<mrow>
<!-- stretchy, small size -->
<mspace height="2em"/>
<mo style="visibility: hidden">⥯</mo>
</mrow>
</math>
<math>
<mrow>
<!-- stretchy, large size -->
<mspace height="4em"/>
<mo style="visibility: hidden">⥯</mo>
</mrow>
</math>
<div id="dynamic">
<math>
<!-- unstretched operators -->
<mo stretchy="false">⥯</mo>
<mo>+</mo>
<mo>-</mo>
</math>
<math displaystyle="true">
<!-- large operator -->
<mo largeop="true">⥯</mo>
</math>
<math>
<mrow>
<!-- stretchy, small size -->
<mspace height="2em"/>
<mo>⥯</mo>
</mrow>
</math>
<math>
<mrow>
<!-- stretchy, large size -->
<mspace height="4em"/>
<mo>⥯</mo>
</mrow>
</math>
</div>
</div>
<script src="/mathml/support/fonts.js"></script>
<script>
window.addEventListener("load", () => loadAllFonts().then(() => {
document.getElementById("dynamic").style.visibility = "hidden";
document.documentElement.classList.remove("reftest-wait");
}));
</script>
<script src="/mathml/support/feature-detection.js"></script>
<script>MathMLFeatureDetection.ensure_for_match_reftest("has_menclose");</script>
</body>
</html>
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