import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions

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<!DOCTYPE html>
<html>
<head><title>Test dir=rtl</title></head>
<body>
<p>
embellished mfrac (lspace=1em rspace=2em):
<math
<mtext>_</mtext>
<mfrac>
<mo lspace="2em" rspace="1em">+</mo>
<mtext>|</mtext>
</mfrac>
<mtext>_</mtext>
</math>
</p>
</body>
</html>