This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
 Documentation / Mathematica / The Mathematica Book / Reference Guide / Input Syntax  /

A.2.3 Character Strings

Entering character strings.

Character strings can contain any sequence of 8- or 16-bit characters. Characters entered by name or character code are stored the same as if they were entered directly.
Single newlines followed by spaces or tabs are converted to a single space when a string is entered, unless these characters occur within \< ... \>, in which case they are left unchanged.
Within \!\( ... \) any box structures represented using backslash sequences can be used.