Node:dmn, Previous:Multiple Spaces, Up:Inserting Space
@dmn{dimension}: Format a DimensionAt 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.