texmath-0.6.7: tests/writers/mfracZcomp-19.tex
\mathrm{Inline\ double\ up\ arrows,\ auto,\ thick\ line~}\Uparrow \frac{{sin}{\theta }}{{M}} \Uparrow \mathrm{~the\ end.}\mathrm{Inline\ double\ up\ arrows,\ auto,\ thick\ line~}\Uparrow \frac{{sin}{\theta }}{{M}} \Uparrow \mathrm{~the\ end.}