Vertical alignment of rows
\array{ \rowopts{\align{center}} \theta & 4 & \frac{x+1}{5} & B & c\\ \rowopts{\align{base}} \theta & 4 & \frac{x+1}{5} & B & c\\ \rowopts{\align{top}} \theta & 4 & \frac{x+1}{5} & B & c\\ \rowopts{\align{bottom}} \theta & 4 & \frac{x+1}{5} & B & c }
\array{ \rowopts{\underline{none}} 1 & 2 & 3 \\ \rowopts{\underline{solid}} 4 & 5 & 6 \\ \rowopts{\underline{dashed}} 7 & 8 & 9 \\ a & b & c }More information on these commands may be found in Sec. 7.2.2 of the WebTeX documentation.
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