1. Felipe

    I just want to clarify something. \textsc{} does not produce “all capital letters” but instead it produces small caps. That is, it produces uppercase letters that are slightly smaller than normal uppercase characters. Also, if there is a capital letter in the emphasized text, it will be appear as a regular uppercase character.

  2. Lasaro

    Felipe, \emph is the prefered way to emphasize because it is adaptable to the text surrounding it. For example, if you want to emphasize a word in the middle of italic text (e.g., in abstracts of papers), then \emph will make the work non italic. If you use \textit, then there would be no difference between the word and the rest of the text.

  3. Chris

    There also is another command, namely \textsl, which produces slanted text (which is slightly different from the italic one).

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