I have the code for a table. What is the default thickness for the lines? I would like to double the thickness for the vertical line to distinguish the "total column", and I would like to double the thickness for the horizontal line to distinguish the "total row." (I guess that I should make the line separating the title thicker, too.)

```
\documentclass{amsart}
\begin{document}
\noindent \hspace*{\fill}
\begin{tabular}{|| c | c | c | c ||} \hline
\multicolumn{4}{|| c ||}{{\bf Residents of Preston City}} \\ \hline
& Employed & Unemployed & Total \\ \hline
Men & 27,000 & & \\ \hline
Women & & & 21,500 \\ \hline
Total & 48,000 & & 50,500 \\ \hline
\end{tabular}
\hspace{\fill}
\end{document}
```

## Best Answer

You can use

`makecell`

, which has`\Xhline{thickness}`

and`\Xcline{thickness}{col1-col2}`

commands.Alternatively, the

`boldline`

package, from the`shipunov`

bundle, has`\hlineB`

and`\clineB`

commands; the argument is`num`

times`\arrayrulewidth`

. It also has a`V{num}`

specifier for vertical rules, which replaces`|`

.By the way, the default

`\arrayrulewidth`

is`0.4pt`

.Demo of both solutions: