This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
Mathematica Character Name


  • Unicode: F432.
  • Alias: Esc | Esc.
  • Infix operator.
  • Used in mathematics for many purposes, including indicating restriction and standing for "such that".
  • Also used to separate arguments of various mathematical functions.
  • Extensible character; grows by default to limited size.
  • Not the same as \[VerticalLine], which is a letter-like form, and is indefinitely extensible.