### 13.2.4 `@dmn`{dimension}: Format a Dimension

At times, you may want to write ‘`12pt`’ or ‘`8.5in`’ with little or no space between the number and the abbreviation for the dimension. You can use the `@dmn` command to do this. On seeing the command, TeX inserts just enough space for proper typesetting; the Info formatting commands insert no space at all, since the Info file does not require it.

To use the `@dmn` command, write the number and then follow it immediately, with no intervening space, by `@dmn`, and then by the dimension within braces. For example,

    A4 paper is 8.27@dmn{in} wide.

produces

> A4 paper is 8.27in wide.

Not everyone uses this style. Some people prefer ‘`8.27 in.@:`’ or ‘`8.27 inches`’ to ‘`8.27@dmn{in}`’ in the Texinfo file. In these cases, however, the formatters may insert a line break between the number and the dimension, so use `@w` (see w). Also, if you write a period after an abbreviation within a sentence, you should write ‘`@:`’ after the period to prevent TeX from inserting extra whitespace, as shown here. See Not Ending a Sentence.