NegativeThickSpace
\[NegativeThickSpace]
Alias: -. Negative spacing character. Used to bring characters on either side closer together. Width: em. Interpreted by default just like an ordinary \[RawSpace]. See The Mathematica Book: Section 2.8.11 and Section 3.10.5. See also: \[NegativeMediumSpace] , \[ThickSpace] .