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-rw-r--r--tex/context/base/mkxl/math-ini.mkxl3
1 files changed, 3 insertions, 0 deletions
diff --git a/tex/context/base/mkxl/math-ini.mkxl b/tex/context/base/mkxl/math-ini.mkxl
index a7ec2abba..f63827906 100644
--- a/tex/context/base/mkxl/math-ini.mkxl
+++ b/tex/context/base/mkxl/math-ini.mkxl
@@ -1412,6 +1412,9 @@
\permanent\protected\def\mathdepthstrut {\math_strut_depth}
\popoverloadmode
+\permanent\protected\def\topstrut{\srule\s!width\zeropoint\s!height\strutht \s!depth\zeropoint\relax}
+\permanent\protected\def\botstrut{\srule\s!width\zeropoint\s!height\zeropoint\s!depth\strutdp \relax}
+
%D We could have a arg variant \unknown\ but not now.
\permanent\protected\def\mathopwithlimits#1#2{\mathop{#1{#2}}\limits}