munder1.test

<<< native
[ EUnder False (EIdentifier "x") (ESymbol Accent "\180")
, ESymbol Rel "\8800"
, EUnder False (EIdentifier "x") (ESymbol Ord "\180")
, ESymbol Rel "="
, EUnder False (EIdentifier "x") (ESymbol Ord "\180")
, ESymbol Rel "="
, EUnder False (EIdentifier "x") (ESymbol Ord "\180")
]
>>> tex
\underset{´}{x} \neq \underset{´}{x} = \underset{´}{x} = \underset{´}{x}