\equalcols
and \equalrows
\array{ 1 & 2 & 5 & A & D \\ 3 & \frac{1}{x_0} & 6 & B & c\\ \beta & \Gamma & \Theta & \mu & 5001\\ 7 & 8 & 9 & G & 2001} = \array{\arrayopts{\equalrows{true}} 1 & 2 & 5 & A & D\\ 3 & \frac{1}{x_0} & 6 & B & c\\ \beta & \Gamma & \Theta & \mu & 5001 \\ 7 & 8 & 9 & G & 2001}
\array{ \arrayopts{\equalcols{true}} 1 & 2 & 5 & A & D \\ 3 & \frac{1}{x_0} & 6 & B & c\\ \beta & \Gamma & \Theta & \mu & 5001\\ 7 & 8 & 9 & G & 2001} = \array{\arrayopts{\equalrows{true}\equalcols{true} } 1 & 2 & 5 & A & D\\ 3 & \frac{1}{x_0} & 6 & B & c\\ \beta & \Gamma & \Theta & \mu & 5001 \\ 7 & 8 & 9 & G & 2001}More information on these commands may be found in Sec. 7.2.1 of the WebTeX documentation.
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