ThinSpace
\[ThinSpace]
Alias: . Spacing character. Width: 3/18 em. Interpreted by default just like an ordinary \[RawSpace]. See The Mathematica Book: Section 2.8.11 and Section 3.10.5. See also: \[VeryThinSpace] , \[MediumSpace] , \[NegativeThinSpace] , \[SpaceIndicator] .