Changes

\starttabulate[|l|rl|l|]\HL\NC {\bf size} \NC {\bf Command} \NC Rendering \NR\HL\NC math \NC \textype{\frac{1}{3}} \NC \m{\frac{1}{3}} \NC\NR\NC script \NC \textype{\xfrac{1}{3}} \NC \m{\xfrac{1}{3}} \NC\NR\NC scriptscript \NC \textype{\xxfrac{1}{3}} \NC \m{\xxfrac{1}{3}} \NC\NR\NC text \NC \textype{\tfrac{1}{3}} \NC \m{\tfrac{1}{3}} \NC\NR\NC script \NC \textype{\sfrac{1}{3}} \NC \m{\sfrac{1}{3}} \NC\NR\NC display \NC \textype{\dfrac{1}{3}} \NC \m{\dfrac{1}{3}} \NC\NR\NC continued \NC \textype{\cfrac{1}{3}} \NC \m{\cfrac{\frac{1}{3}+\frac{1}{3}}{ \frac{1}{3}+\frac{1}{3}}} NC\NR\NC "vertical " \NC \textype{\vfrac{1}{3}} \NC \m{\vfrac{1}{3}} \NC\NR\NC "horizontal " \NC \textype{\hfrac{1}{3}} \NC \m{\hfrac{1}{3}} \NC\NR