• Alias: l|.
• Matchfix operator.
• x is by default interpreted as BracketingBar[x].
• Used in mathematics to indicate absolute value (Abs), determinant (Det), and other notions of evaluating size or magnitude.
• Not the same as \[VerticalBar] .
• Drawn in monospaced fonts with a small left-pointing tee to indicate direction.
• Extensible character.
• See Section 3.10.1 and Section 3.10.4.
• See also: \[LeftDoubleBracketingBar] , \[LeftTee] .