Synopsis, one of:
These produce unbreakable and unstretchable spaces of 1/6em and
-1/6em, respectively. These are the text mode equivalents of
\! (see Spacing in math mode/\thinspace).
You can use
\, as a synonym for
\thinspace in text mode.
One common use of
\thinspace is as the space between nested
Killick replied, ``I heard the Captain say, `Ahoy there.'\thinspace''
Another use is that some style guides call for a
between an ellipsis and a sentence ending period (other style guides,
think the three dots and/or four dots are plenty). Another
style-specific use is between initials, as in
LaTeX provides a variety of similar spacing commands
(see Spacing in math mode). With
amsmath, or as of the
2020-10-01 LaTeX release, they can be used in text mode as well as
math mode, including
\negthinspace; before that,
they were available only in math mode.