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Document 497

The LaTeX hhline package

Version: 3.x, 4.x, 5.x - Scientific WorkPlace & Scientific Word

The hhline package works with the array package to implement fine control of single and double horizontal lines (like \hline and \hline\hline) within typeset tables, as shown here:
Example of hhline effects

Note that you can achieve similar results in SWP and SW without the hhline package:
Example of similar effects in SWP and SW

However, when you use double lines around the outside of a table, the hhline package may produce a more pleasing appearance at the outside corners.

The lines are governed by the package command \hhline. The command arguments are tokens, or symbols, that indicate the absence, presence, and width of a horizontal line and whether or not it breaks or is broken by an intersecting vertical line. See the package documentation for a discussion of the tokens.

How to create horizontal lines within a tabular environment

  1. Add the hhline package to your document.
  2. Enter an encapsulated TeX field.
  3. In the entry area, type \begin{tabular} to define a tabular environment.
  4. Enter the tabular content.
  5. Between rows of content, use \hhline commands with appropriate tokens to define the lines you want.
  6. Type \end{tabular} to end the environment.
  7. Choose OK.

No package options are available. The hhline package is installed in the TCITeX/TeX/LaTeX/required/tools directory as part of the Standard LaTeX Tools Bundle.

Last revised 01/20/06

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