### 9.1.13 `@acronym`{acronym}

Use the `@acronym` command for abbreviations written in all capital letters, such as ‘NASA’. The abbreviation is given as the single argument in braces, as in ‘`@acronym{NASA}`’. As a matter of style, or for particular abbreviations, you may prefer to use periods, as in ‘`@acronym{F.B.I.}`’.

In TeX and HTML, the argument is printed in a slightly smaller font size. In Info or plain text output, this command changes nothing.