This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Non-Printing Characters
Mathematica includes a variety of non-printing characters, some used to fine-tune layout, and others used to define precise syntactic interpretations while maintaining the traditional look of various mathematical notations.
Spacing Characters
\[NegativeThinSpace] "negative space" to bring objects closer together
\[LetterSpace] an almost-invisible space treated as a letter, e.g. in a symbol name
    
Line-Breaking Control
\[NonBreakingSpace] insert a space, but do not allow it to be at a line break
\[NoBreak] ensure that no line break occurs at this point
\[IndentingNewLine] insert a new line, with indentation on the next line
\[DiscretionaryHyphen] hyphen to include only at a line break
Alignment Markers
\[AlignmentMarker] represent a position that should be aligned in a grid
    
Invisible Mathematica Syntax
\[InvisibleSpace] invisible character treated like a space in Mathematica syntax
\[InvisibleComma] invisible character treated like a comma
\[InvisibleApplication] invisible character making f x behave like f[x]
\[ImplicitPlus] invisible character representing addition (e.g. in compound fractions)
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