diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,3 +1,15 @@
+texmath (0.11.2.3)
+
+  * OMML reader: properly distinguish normal text from math (#136).
+    If `m:nor` or `m:lit` is set in `m:rPr`, we interpret the
+    contents as literal text and not as math.
+  * TeX reader: use different symbol (`_`) for `\underline` (#142).
+    This gets the right accent properties on MathML output, so
+    that the underline is not lower than it should be.
+  * TeX reader: Treat `\bmod` as a relational symbol rather than
+    an operator (#143).  This fixes spacing problems in several
+    output formats.
+
 texmath (0.11.2.2)
 
   * OMML writer: use m:nor for normal text (#135).
diff --git a/src/Text/TeXMath/Readers/OMML.hs b/src/Text/TeXMath/Readers/OMML.hs
--- a/src/Text/TeXMath/Readers/OMML.hs
+++ b/src/Text/TeXMath/Readers/OMML.hs
@@ -429,19 +429,18 @@
   return [ESuper baseExp (EGrouped supExps)]
 elemToExps' element | isElem "m" "r" element = do
   let mrPr = filterChildName (hasElemName "m" "rPr") element
-      lit = mrPr >>=
-            filterChildName (hasElemName "m" "lit") >>=
-            findAttrBy (hasElemName "m" "val")
-      txtSty = elemToOMathRunTextStyle element
+      lit = mrPr >>= filterChildName (hasElemName "m" "lit")
+      nor = mrPr >>= filterChildName (hasElemName "m" "nor")
+      txtSty = oMathRunTextStyleToTextType $ elemToOMathRunTextStyle element
   mrElems <- elemToOMathRunElems element
-  return $ case oMathRunTextStyleToTextType txtSty of
-    Nothing -> interpretString $ oMathRunElemsToString mrElems
-    Just textType ->
-      case lit of
-        Just "on" ->
-          [EText textType (oMathRunElemsToString mrElems)]
-        _         ->
-          [EStyled textType $ interpretString $ oMathRunElemsToString mrElems]
+  return $
+    if null lit && null nor
+       then case txtSty of
+              Nothing ->
+                interpretString $ oMathRunElemsToString mrElems
+              Just textSty ->
+                [EStyled textSty $ interpretString $ oMathRunElemsToString mrElems]
+       else [EText (fromMaybe TextNormal txtSty) $ oMathRunElemsToString mrElems]
 elemToExps' _ = Nothing
 
 interpretChar :: Char -> Exp
diff --git a/src/Text/TeXMath/Readers/TeX.hs b/src/Text/TeXMath/Readers/TeX.hs
--- a/src/Text/TeXMath/Readers/TeX.hs
+++ b/src/Text/TeXMath/Readers/TeX.hs
@@ -1073,7 +1073,7 @@
   , ("\\max",EMathOperator "max")
   , ("\\min",EMathOperator "min")
   , ("\\mod",EMathOperator "mod")
-  , ("\\bmod",EMathOperator "mod")
+  , ("\\bmod",ESymbol Rel "mod")
   , ("\\Pr",EMathOperator "Pr")
   , ("\\sec",EMathOperator "sec")
   , ("\\sin",EMathOperator "sin")
@@ -3529,7 +3529,7 @@
   , ("\\underbracket",ESymbol TUnder "\9141")
   , ("\\underleftarrow",ESymbol Accent "\8430")
   , ("\\underleftharpoondown",ESymbol Accent "\8429")
-  , ("\\underline",ESymbol TUnder "\818")
+  , ("\\underline",ESymbol TUnder "_")
   , ("\\underparen",ESymbol TUnder "\9181")
   , ("\\underrightarrow",ESymbol Accent "\8431")
   , ("\\underrightharpoondown",ESymbol Accent "\8428")
diff --git a/src/Text/TeXMath/Shared.hs b/src/Text/TeXMath/Shared.hs
--- a/src/Text/TeXMath/Shared.hs
+++ b/src/Text/TeXMath/Shared.hs
@@ -321,6 +321,7 @@
                , ("\x23DF", "\\underbrace")
                , ("\x23B5", "\\underbracket") -- mathtools
                , ("\x0332", "\\underline")
+               , ("_", "\\underline")
                , ("\x0333", "\\underbar")
                ]
 
diff --git a/tests/readers/tex/subsup.native b/tests/readers/tex/subsup.native
--- a/tests/readers/tex/subsup.native
+++ b/tests/readers/tex/subsup.native
@@ -1,1 +1,1 @@
-[ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),EUnder True (EMathOperator "min") (EIdentifier "A"),ESpace (1 % 1),EUnder True (EMathOperator "max") (EIdentifier "B"),ESpace (1 % 1),EUnder True (EMathOperator "det") (EIdentifier "C"),ESpace (1 % 1),EUnder True (EMathOperator "Pr") (EIdentifier "A"),ESpace (1 % 1),EUnder True (EMathOperator "gcd") (EIdentifier "A"),ESpace (1 % 1),ESuper (EOver False (EIdentifier "u") (ESymbol Accent "\775")) (ENumber "2"),ESpace (1 % 1),ESub (EOver False (EIdentifier "u") (ESymbol TOver "\175")) (EIdentifier "\949"),ESpace (1 % 1),ESubsup (EUnder False (EIdentifier "u") (ESymbol TUnder "\818")) (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),EOver False (EOver False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TOver "\9182")) (EText TextNormal "term"),ESpace (1 % 1),EOver False (EOver False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TOver "\9140")) (EIdentifier "c"),ESpace (1 % 1),EUnder False (EUnder False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TUnder "\9183")) (EIdentifier "c"),ESpace (1 % 1),EUnder False (EUnder False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TUnder "\9141")) (EIdentifier "c"),ESuper (ESpace (1 % 1)) (EIdentifier "H"),EIdentifier "e",ENumber "3",ESub (ESpace (1 % 1)) (EIdentifier "x"),EIdentifier "A",ESubsup (ESpace (1 % 1)) (EIdentifier "x") (ENumber "3")]
+[ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),EUnder True (EMathOperator "min") (EIdentifier "A"),ESpace (1 % 1),EUnder True (EMathOperator "max") (EIdentifier "B"),ESpace (1 % 1),EUnder True (EMathOperator "det") (EIdentifier "C"),ESpace (1 % 1),EUnder True (EMathOperator "Pr") (EIdentifier "A"),ESpace (1 % 1),EUnder True (EMathOperator "gcd") (EIdentifier "A"),ESpace (1 % 1),ESuper (EOver False (EIdentifier "u") (ESymbol Accent "\775")) (ENumber "2"),ESpace (1 % 1),ESub (EOver False (EIdentifier "u") (ESymbol TOver "\175")) (EIdentifier "\949"),ESpace (1 % 1),ESubsup (EUnder False (EIdentifier "u") (ESymbol TUnder "_")) (EIdentifier "b") (EIdentifier "a"),ESpace (1 % 1),EOver False (EOver False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TOver "\9182")) (EText TextNormal "term"),ESpace (1 % 1),EOver False (EOver False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TOver "\9140")) (EIdentifier "c"),ESpace (1 % 1),EUnder False (EUnder False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TUnder "\9183")) (EIdentifier "c"),ESpace (1 % 1),EUnder False (EUnder False (EGrouped [EIdentifier "a",ESymbol Bin "+",EIdentifier "b"]) (ESymbol TUnder "\9141")) (EIdentifier "c"),ESuper (ESpace (1 % 1)) (EIdentifier "H"),EIdentifier "e",ENumber "3",ESub (ESpace (1 % 1)) (EIdentifier "x"),EIdentifier "A",ESubsup (ESpace (1 % 1)) (EIdentifier "x") (ENumber "3")]
diff --git a/tests/writers/accents3.tex b/tests/writers/accents3.tex
--- a/tests/writers/accents3.tex
+++ b/tests/writers/accents3.tex
@@ -1,6 +1,6 @@
 \begin{array}{l}
 \text{default:\ (accent=true)} \\
-{\underset{'}{H}\underset{\hat{}}{H}\underset{\_}{H}\underset{`}{H}\underset{\sim}{H}\underset{¨}{H}\underset{¯}{H}\underset{´}{H}\underset{¸}{H}\underset{\hat{}}{H}\underset{ˇ}{H}\underset{˘}{H}\underset{˙}{H}\underset{˚}{H}\underset{˜}{H}\underset{˝}{H}\underset{\hat{}}{H}\underset{̑}{H}\underset{‾}{H}\underset{\dddot{}}{H}\underset{\ddddot{}}{H}\underset{\leftarrow}{H}\underset{\rightarrow}{H}\underset{\leftrightarrow}{H}\underset{\leftharpoonup}{H}\underset{\leftharpoondown}{H}\underset{\rightharpoonup}{H}\underset{\rightharpoondown}{H}\underset{⎴}{H}\underset{⎵}{H}\underset{⏜}{H}\underset{⏝}{H}\underset{\overbrace{}}{H}\underbrace{H}\underset{⥎}{H}\underset{⥐}{H}} \\
+{\underset{'}{H}\underset{\hat{}}{H}\underline{H}\underset{`}{H}\underset{\sim}{H}\underset{¨}{H}\underset{¯}{H}\underset{´}{H}\underset{¸}{H}\underset{\hat{}}{H}\underset{ˇ}{H}\underset{˘}{H}\underset{˙}{H}\underset{˚}{H}\underset{˜}{H}\underset{˝}{H}\underset{\hat{}}{H}\underset{̑}{H}\underset{‾}{H}\underset{\dddot{}}{H}\underset{\ddddot{}}{H}\underset{\leftarrow}{H}\underset{\rightarrow}{H}\underset{\leftrightarrow}{H}\underset{\leftharpoonup}{H}\underset{\leftharpoondown}{H}\underset{\rightharpoonup}{H}\underset{\rightharpoondown}{H}\underset{⎴}{H}\underset{⎵}{H}\underset{⏜}{H}\underset{⏝}{H}\underset{\overbrace{}}{H}\underbrace{H}\underset{⥎}{H}\underset{⥐}{H}} \\
 \text{accent=false:} \\
 {\underset{'}{H}\underset{\hat{}}{H}\underset{\_}{H}\underset{`}{H}\underset{\sim}{H}\underset{¨}{H}\underset{¯}{H}\underset{´}{H}\underset{¸}{H}\underset{\hat{}}{H}\underset{ˇ}{H}\underset{˘}{H}\underset{˙}{H}\underset{˚}{H}\underset{˜}{H}\underset{˝}{H}\underset{\hat{}}{H}\underset{̑}{H}\underset{‾}{H}\underset{\dddot{}}{H}\underset{\ddddot{}}{H}\underset{\leftarrow}{H}\underset{\rightarrow}{H}\underset{\leftrightarrow}{H}\underset{\leftharpoonup}{H}\underset{\leftharpoondown}{H}\underset{\rightharpoonup}{H}\underset{\rightharpoondown}{H}\underset{⎴}{H}\underset{⎵}{H}\underset{⏜}{H}\underset{⏝}{H}\underset{\overbrace{}}{H}\underbrace{H}\underset{⥎}{H}\underset{⥐}{H}} \\
 \end{array}
diff --git a/tests/writers/accents4.tex b/tests/writers/accents4.tex
--- a/tests/writers/accents4.tex
+++ b/tests/writers/accents4.tex
@@ -1,6 +1,6 @@
 \begin{array}{l}
 \text{default:\ (accent=true)} \\
-{\underset{'}{x}\underset{\hat{}}{x}\underset{\_}{x}\underset{`}{x}\underset{\sim}{x}\underset{¨}{x}\underset{¯}{x}\underset{´}{x}\underset{¸}{x}\underset{\hat{}}{x}\underset{ˇ}{x}\underset{˘}{x}\underset{˙}{x}\underset{˚}{x}\underset{˜}{x}\underset{˝}{x}\underset{\hat{}}{x}\underset{̑}{x}\underset{‾}{x}\underset{\dddot{}}{x}\underset{\ddddot{}}{x}\underset{\leftarrow}{x}\underset{\rightarrow}{x}\underset{\leftrightarrow}{x}\underset{\leftharpoonup}{x}\underset{\leftharpoondown}{x}\underset{\rightharpoonup}{x}\underset{\rightharpoondown}{x}\underset{⎴}{x}\underset{⎵}{x}\underset{⏜}{x}\underset{⏝}{x}\underset{\overbrace{}}{x}\underbrace{x}\underset{⥎}{x}\underset{⥐}{x}} \\
+{\underset{'}{x}\underset{\hat{}}{x}\underline{x}\underset{`}{x}\underset{\sim}{x}\underset{¨}{x}\underset{¯}{x}\underset{´}{x}\underset{¸}{x}\underset{\hat{}}{x}\underset{ˇ}{x}\underset{˘}{x}\underset{˙}{x}\underset{˚}{x}\underset{˜}{x}\underset{˝}{x}\underset{\hat{}}{x}\underset{̑}{x}\underset{‾}{x}\underset{\dddot{}}{x}\underset{\ddddot{}}{x}\underset{\leftarrow}{x}\underset{\rightarrow}{x}\underset{\leftrightarrow}{x}\underset{\leftharpoonup}{x}\underset{\leftharpoondown}{x}\underset{\rightharpoonup}{x}\underset{\rightharpoondown}{x}\underset{⎴}{x}\underset{⎵}{x}\underset{⏜}{x}\underset{⏝}{x}\underset{\overbrace{}}{x}\underbrace{x}\underset{⥎}{x}\underset{⥐}{x}} \\
 \text{accent=false:} \\
 {\underset{'}{x}\underset{\hat{}}{x}\underset{\_}{x}\underset{`}{x}\underset{\sim}{x}\underset{¨}{x}\underset{¯}{x}\underset{´}{x}\underset{¸}{x}\underset{\hat{}}{x}\underset{ˇ}{x}\underset{˘}{x}\underset{˙}{x}\underset{˚}{x}\underset{˜}{x}\underset{˝}{x}\underset{\hat{}}{x}\underset{̑}{x}\underset{‾}{x}\underset{\dddot{}}{x}\underset{\ddddot{}}{x}\underset{\leftarrow}{x}\underset{\rightarrow}{x}\underset{\leftrightarrow}{x}\underset{\leftharpoonup}{x}\underset{\leftharpoondown}{x}\underset{\rightharpoonup}{x}\underset{\rightharpoondown}{x}\underset{⎴}{x}\underset{⎵}{x}\underset{⏜}{x}\underset{⏝}{x}\underset{\overbrace{}}{x}\underbrace{x}\underset{⥎}{x}\underset{⥐}{x}} \\
 \end{array}
diff --git a/tests/writers/accents5.tex b/tests/writers/accents5.tex
--- a/tests/writers/accents5.tex
+++ b/tests/writers/accents5.tex
@@ -1,6 +1,6 @@
 \begin{array}{l}
 \text{default:\ (accent=true)} \\
-{\underset{'}{\overset{'}{H}}\underset{\hat{}}{\hat{H}}\underset{\_}{\overset{\_}{H}}\underset{`}{\grave{H}}\underset{\sim}{\overset{\sim}{H}}\underset{¨}{\overset{¨}{H}}\underset{¯}{\overline{H}}\underset{´}{\acute{H}}\underset{¸}{\overset{¸}{H}}\underset{\hat{}}{\widehat{H}}\underset{ˇ}{\check{H}}\underset{˘}{\breve{H}}\underset{˙}{\overset{˙}{H}}\underset{˚}{\overset{˚}{H}}\underset{˜}{\widetilde{H}}\underset{˝}{\overset{˝}{H}}\underset{\hat{}}{\widehat{H}}\underset{̑}{\overset{̑}{H}}\underset{‾}{\bar{H}}\underset{\dddot{}}{\dddot{H}}\underset{\ddddot{}}{\ddddot{H}}\underset{\leftarrow}{\overset{\leftarrow}{H}}\underset{\rightarrow}{\overset{\rightarrow}{H}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{H}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{H}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{H}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{H}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{H}}\underset{⎴}{\overset{⎴}{H}}\underset{⎵}{\overset{⎵}{H}}\underset{⏜}{\overset{⏜}{H}}\underset{⏝}{\overset{⏝}{H}}\underset{\overbrace{}}{\overbrace{H}}\underbrace{\overset{\underbrace{}}{H}}\underset{⥎}{\overset{⥎}{H}}\underset{⥐}{\overset{⥐}{H}}} \\
+{\underset{'}{\overset{'}{H}}\underset{\hat{}}{\hat{H}}\underline{\overset{\_}{H}}\underset{`}{\grave{H}}\underset{\sim}{\overset{\sim}{H}}\underset{¨}{\overset{¨}{H}}\underset{¯}{\overline{H}}\underset{´}{\acute{H}}\underset{¸}{\overset{¸}{H}}\underset{\hat{}}{\widehat{H}}\underset{ˇ}{\check{H}}\underset{˘}{\breve{H}}\underset{˙}{\overset{˙}{H}}\underset{˚}{\overset{˚}{H}}\underset{˜}{\widetilde{H}}\underset{˝}{\overset{˝}{H}}\underset{\hat{}}{\widehat{H}}\underset{̑}{\overset{̑}{H}}\underset{‾}{\bar{H}}\underset{\dddot{}}{\dddot{H}}\underset{\ddddot{}}{\ddddot{H}}\underset{\leftarrow}{\overset{\leftarrow}{H}}\underset{\rightarrow}{\overset{\rightarrow}{H}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{H}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{H}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{H}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{H}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{H}}\underset{⎴}{\overset{⎴}{H}}\underset{⎵}{\overset{⎵}{H}}\underset{⏜}{\overset{⏜}{H}}\underset{⏝}{\overset{⏝}{H}}\underset{\overbrace{}}{\overbrace{H}}\underbrace{\overset{\underbrace{}}{H}}\underset{⥎}{\overset{⥎}{H}}\underset{⥐}{\overset{⥐}{H}}} \\
 \text{accent=false:} \\
 {\underset{'}{\overset{'}{H}}\underset{\hat{}}{\overset{\hat{}}{H}}\underset{\_}{\overset{\_}{H}}\underset{`}{\overset{`}{H}}\underset{\sim}{\overset{\sim}{H}}\underset{¨}{\overset{¨}{H}}\underset{¯}{\overset{¯}{H}}\underset{´}{\overset{´}{H}}\underset{¸}{\overset{¸}{H}}\underset{\hat{}}{\overset{\hat{}}{H}}\underset{ˇ}{\overset{ˇ}{H}}\underset{˘}{\overset{˘}{H}}\underset{˙}{\overset{˙}{H}}\underset{˚}{\overset{˚}{H}}\underset{˜}{\overset{˜}{H}}\underset{˝}{\overset{˝}{H}}\underset{\hat{}}{\widehat{H}}\underset{̑}{\overset{̑}{H}}\underset{‾}{\overset{‾}{H}}\underset{\dddot{}}{\dddot{H}}\underset{\ddddot{}}{\ddddot{H}}\underset{\leftarrow}{\overset{\leftarrow}{H}}\underset{\rightarrow}{\overset{\rightarrow}{H}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{H}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{H}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{H}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{H}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{H}}\underset{⎴}{\overset{⎴}{H}}\underset{⎵}{\overset{⎵}{H}}\underset{⏜}{\overset{⏜}{H}}\underset{⏝}{\overset{⏝}{H}}\underset{\overbrace{}}{\overbrace{H}}\underbrace{\overset{\underbrace{}}{H}}\underset{⥎}{\overset{⥎}{H}}\underset{⥐}{\overset{⥐}{H}}} \\
 \end{array}
diff --git a/tests/writers/accents6.tex b/tests/writers/accents6.tex
--- a/tests/writers/accents6.tex
+++ b/tests/writers/accents6.tex
@@ -1,6 +1,6 @@
 \begin{array}{l}
 \text{default:\ (accent=true)} \\
-{\underset{'}{\overset{'}{x}}\underset{\hat{}}{\hat{x}}\underset{\_}{\overset{\_}{x}}\underset{`}{\grave{x}}\underset{\sim}{\overset{\sim}{x}}\underset{¨}{\overset{¨}{x}}\underset{¯}{\overline{x}}\underset{´}{\acute{x}}\underset{¸}{\overset{¸}{x}}\underset{\hat{}}{\widehat{x}}\underset{ˇ}{\check{x}}\underset{˘}{\breve{x}}\underset{˙}{\overset{˙}{x}}\underset{˚}{\overset{˚}{x}}\underset{˜}{\widetilde{x}}\underset{˝}{\overset{˝}{x}}\underset{\hat{}}{\widehat{x}}\underset{̑}{\overset{̑}{x}}\underset{‾}{\bar{x}}\underset{\dddot{}}{\dddot{x}}\underset{\ddddot{}}{\ddddot{x}}\underset{\leftarrow}{\overset{\leftarrow}{x}}\underset{\rightarrow}{\overset{\rightarrow}{x}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{x}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{x}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{x}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{x}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{x}}\underset{⎴}{\overset{⎴}{x}}\underset{⎵}{\overset{⎵}{x}}\underset{⏜}{\overset{⏜}{x}}\underset{⏝}{\overset{⏝}{x}}\underset{\overbrace{}}{\overbrace{x}}\underbrace{\overset{\underbrace{}}{x}}\underset{⥎}{\overset{⥎}{x}}\underset{⥐}{\overset{⥐}{x}}} \\
+{\underset{'}{\overset{'}{x}}\underset{\hat{}}{\hat{x}}\underline{\overset{\_}{x}}\underset{`}{\grave{x}}\underset{\sim}{\overset{\sim}{x}}\underset{¨}{\overset{¨}{x}}\underset{¯}{\overline{x}}\underset{´}{\acute{x}}\underset{¸}{\overset{¸}{x}}\underset{\hat{}}{\widehat{x}}\underset{ˇ}{\check{x}}\underset{˘}{\breve{x}}\underset{˙}{\overset{˙}{x}}\underset{˚}{\overset{˚}{x}}\underset{˜}{\widetilde{x}}\underset{˝}{\overset{˝}{x}}\underset{\hat{}}{\widehat{x}}\underset{̑}{\overset{̑}{x}}\underset{‾}{\bar{x}}\underset{\dddot{}}{\dddot{x}}\underset{\ddddot{}}{\ddddot{x}}\underset{\leftarrow}{\overset{\leftarrow}{x}}\underset{\rightarrow}{\overset{\rightarrow}{x}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{x}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{x}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{x}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{x}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{x}}\underset{⎴}{\overset{⎴}{x}}\underset{⎵}{\overset{⎵}{x}}\underset{⏜}{\overset{⏜}{x}}\underset{⏝}{\overset{⏝}{x}}\underset{\overbrace{}}{\overbrace{x}}\underbrace{\overset{\underbrace{}}{x}}\underset{⥎}{\overset{⥎}{x}}\underset{⥐}{\overset{⥐}{x}}} \\
 \text{accent=false:} \\
 {\underset{'}{\overset{'}{x}}\underset{\hat{}}{\overset{\hat{}}{x}}\underset{\_}{\overset{\_}{x}}\underset{`}{\overset{`}{x}}\underset{\sim}{\overset{\sim}{x}}\underset{¨}{\overset{¨}{x}}\underset{¯}{\overset{¯}{x}}\underset{´}{\overset{´}{x}}\underset{¸}{\overset{¸}{x}}\underset{\hat{}}{\overset{\hat{}}{x}}\underset{ˇ}{\overset{ˇ}{x}}\underset{˘}{\overset{˘}{x}}\underset{˙}{\overset{˙}{x}}\underset{˚}{\overset{˚}{x}}\underset{˜}{\overset{˜}{x}}\underset{˝}{\overset{˝}{x}}\underset{\hat{}}{\widehat{x}}\underset{̑}{\overset{̑}{x}}\underset{‾}{\overset{‾}{x}}\underset{\dddot{}}{\dddot{x}}\underset{\ddddot{}}{\ddddot{x}}\underset{\leftarrow}{\overset{\leftarrow}{x}}\underset{\rightarrow}{\overset{\rightarrow}{x}}\underset{\leftrightarrow}{\overset{\leftrightarrow}{x}}\underset{\leftharpoonup}{\overset{\leftharpoonup}{x}}\underset{\leftharpoondown}{\overset{\leftharpoondown}{x}}\underset{\rightharpoonup}{\overset{\rightharpoonup}{x}}\underset{\rightharpoondown}{\overset{\rightharpoondown}{x}}\underset{⎴}{\overset{⎴}{x}}\underset{⎵}{\overset{⎵}{x}}\underset{⏜}{\overset{⏜}{x}}\underset{⏝}{\overset{⏝}{x}}\underset{\overbrace{}}{\overbrace{x}}\underbrace{\overset{\underbrace{}}{x}}\underset{⥎}{\overset{⥎}{x}}\underset{⥐}{\overset{⥐}{x}}} \\
 \end{array}
diff --git a/tests/writers/subsup.eqn b/tests/writers/subsup.eqn
--- a/tests/writers/subsup.eqn
+++ b/tests/writers/subsup.eqn
@@ -1,1 +1,1 @@
-x sub b sup a fwd 100 x sub b sup a fwd 100 min from A fwd 100 max from B fwd 100 "det" from C fwd 100 "Pr" from A fwd 100 "gcd" from A fwd 100 {u to \[u0307]} sup 2 fwd 100 {u to \[u00AF]} sub \[u03B5] fwd 100 {u from \[u0332]} sub b sup a fwd 100 {{a + b} to \[u23DE]} to {roman "term"} fwd 100 {{a + b} to \[u23B4]} to c fwd 100 {{a + b} from \[u23DF]} from c fwd 100 {{a + b} from \[u23B5]} from c {fwd 100} sup H e 3 {fwd 100} sub x A {fwd 100} sub x sup 3
+x sub b sup a fwd 100 x sub b sup a fwd 100 min from A fwd 100 max from B fwd 100 "det" from C fwd 100 "Pr" from A fwd 100 "gcd" from A fwd 100 {u to \[u0307]} sup 2 fwd 100 {u to \[u00AF]} sub \[u03B5] fwd 100 {u from _} sub b sup a fwd 100 {{a + b} to \[u23DE]} to {roman "term"} fwd 100 {{a + b} to \[u23B4]} to c fwd 100 {{a + b} from \[u23DF]} from c fwd 100 {{a + b} from \[u23B5]} from c {fwd 100} sup H e 3 {fwd 100} sub x A {fwd 100} sub x sup 3
diff --git a/tests/writers/subsup.mml b/tests/writers/subsup.mml
--- a/tests/writers/subsup.mml
+++ b/tests/writers/subsup.mml
@@ -57,7 +57,7 @@
     <msubsup>
       <munder>
         <mi>u</mi>
-        <mo accent="false">̲</mo>
+        <mo accent="true">_</mo>
       </munder>
       <mi>b</mi>
       <mi>a</mi>
diff --git a/tests/writers/subsup.omml b/tests/writers/subsup.omml
--- a/tests/writers/subsup.omml
+++ b/tests/writers/subsup.omml
@@ -193,7 +193,7 @@
           </m:e>
           <m:lim>
             <m:r>
-              <m:t>̲</m:t>
+              <m:t>_</m:t>
             </m:r>
           </m:lim>
         </m:limLow>
diff --git a/texmath.cabal b/texmath.cabal
--- a/texmath.cabal
+++ b/texmath.cabal
@@ -1,5 +1,5 @@
 Name:                texmath
-Version:             0.11.2.2
+Version:             0.11.2.3
 Cabal-Version:       >= 1.10
 Build-type:          Simple
 Synopsis:            Conversion between formats used to represent mathematics.