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Underlining using the soul package
- Feb 6, 2011 |
- 7 Comments
Underlining content in your LaTeX document can be of great value. Sometimes its necessarily to emphasize certain content or to define a layout in your document. The most straight forward case to do this is to use the \underline command. However, this command does not give you any control about, for instance, the thickness of the underlining. The solution to this is to use the soul package.
The soul package
In the preamble of your document, call the package with \usepackage{soul}. Defining the underlining properties as you like is done with \setul:
\setul{depth}{thickness} |
Both depth and thickness should be defined in terms of ex (x-height). As an example, if you would like to underline content with a 0.8ex thick line at a depth of 1ex, you should enter this in your preamble:
\setul{1ex}{0.8ex} |
Note that the underlining is now independent of the text. When using the standard \underline command, compare \underline{abc} with \underline{gyh}. As you can see, the depth is changed when characters like g and y are underlined.
The depth can also be controlled using \setuldepth. It sets the depth such that the underline’s upper edge lies 1 pt beneath the given argument’s deepest depth:
\setuldepth{g} |
Underlining color
Also, the color of the underlining can be changed with this package. This might be of interest when using LaTeX to create presentation slides. To change the color of the underlining, we use \setulcolor. To define a color in LaTeX, we also need the color package. There are multiple ways to define a color, for instance by choosing a standard color or by defining a custom color. It is explained here how to define a color. If we want the underlining to be orange, we use:
\usepackage{color,soul} \setul{1ex}{0.8ex} \definecolor{orange}{rgb}{1,0.5,0} \setulcolor{orange} |
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