texmath-0.7: tests/writers/mfracZcomp-19.tex
\text{Inline\ double\ up\ arrows,\ auto,\ thick\ line }\left. \Uparrow\frac{\sin\theta}{M}\Uparrow \right.\text{ the\ end.}
\text{Inline\ double\ up\ arrows,\ auto,\ thick\ line }\left. \Uparrow\frac{\sin\theta}{M}\Uparrow \right.\text{ the\ end.}