\rule
and \space
The three arguments of \rule
and \space
are
{ht}{dp}{wd}
ht: height of the top of the box above the baseline
dp: depth of the bottom of the box below the baseline
wd: width of the box
[10][0][10]= \rule{10}{0}{10}. [10][0][10]= \space{10}{0}{10}. [20][0][10]= \rule{20}{0}{10}. [20][0][10]= \space{20}{0}{10}. [0][50][10]= \rule{0}{50}{10}. [0][50][10]= \space{0}{50}{10}.
[10][0][10]= \rule{10}{0}{10}. [10][0][10]= \space{10}{0}{10}. [20][0][30]= \rule{20}{0}{30}. [20][0][30]= \space{20}{0}{30}. [0][50][50]= \rule{0}{50}{50}. [0][50][50]= \space{0}{50}{50}.More information on these commands may be found in Sec. 8.2 of the WebTeX documentation.
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