texmath-0.8: tests/writers/mfracZcomp-18.tex
\text{Inline\ updown\ arrows,\ text\ style,\ normal\ line~}\left. \updownarrow\frac{\sin\theta}{M}\updownarrow \right.\text{~the\ end.}
\text{Inline\ updown\ arrows,\ text\ style,\ normal\ line~}\left. \updownarrow\frac{\sin\theta}{M}\updownarrow \right.\text{~the\ end.}