# Manually correct letter spacing: Kerning

From time to time it is necessary to manually correct the spacing between two letters, i.e. to add some extra kerning. The macro to add this kind of horizontal space is \kern followed by the amount of spacing Since it is a TeX primitive the “argument” must not be in braces and the trailing space is optional.

Example

The following image shows the result: The upper line uses the natural kerning with too much space between letters W and o and the lower line shows the manually correction.

It is suitable to use a font-size-relative length unit like em.

Of course this would be lot of work to do but it is a good idea to at least do it for titles, headlines and such. Furthermore there are typefaces/fonts requiring more corrections than others …

# Point vs. Big Point

In TeX 1pt (TeX point) is defined as 1/72.27 inch. Many other applications like Word and Adobe InDesign etc. however use a slightly bigger point – defined as 1/72 inch – the DTP or PostScript Point. In TeX this unit is named Big Point: 1bp.

# When changing font size don’t forget the \par

When you change the font size with commands like \Large inside a group you must end the paragraph either with a blank line or  \par before the group ends to get the right line spacing.

TeX always uses the baseline skip settings of the site active at the paragraph end, which is actually \normalsize in the first code.

# Prefer \emph over \textit

To highlight text don’t use \textit but \emph, because the latter also provides the right logical markup (“emphasize”) and takes care of nesting.

# Forget about \bf and the like

Did you know that \bf, \it, \rm, \sc etc. are deprecated and should not be used with LaTeX? They don’t allow to be combined and therefore it is recommended to use the new commands like \bfseries, \itshape etc. For short text to be formatted there are also the \textXX{text} versions:

# Getting bold math symbols

Load the bm package in your preamble. Do this after all packages, which define symbol fonts. If you are not sure about this, place this line below all font packages:

Declare a command for each bold symbol:

Use the new macros in your document within math mode.