texmath-0.6.7: tests/writers/mfracZcomp-18.tex
\mathrm{Inline\ updown\ arrows,\ text\ style,\ normal\ line~}\updownarrow \frac{{sin}{\theta }}{{M}} \updownarrow \mathrm{~the\ end.}\mathrm{Inline\ updown\ arrows,\ text\ style,\ normal\ line~}\updownarrow \frac{{sin}{\theta }}{{M}} \updownarrow \mathrm{~the\ end.}