Optional (Built-in Mathematica Symbol)

p : v is a pattern object that represents an expression of the form p, which, if omitted, should be replaced by v.

TraceAbove (Built-in Mathematica Symbol)

TraceAbove is an option for Trace and related functions which specifies whether to include evaluation chains which contain the evaluation chain containing the pattern form ...

Condition (Built-in Mathematica Symbol)

patt /; test is a pattern which matches only if the evaluation of test yields True. lhs :> rhs /; test represents a rule which applies only if the evaluation of test yields ...

ColumnsEqual (Built-in Mathematica Symbol)

ColumnsEqual is an option for the low-level function GridBox which specifies whether all columns in the grid should be assigned equal width.

Conditionals (Mathematica Guide)

Mathematica's symbolic character allows a powerful unification of the notion of conditionals in programming and in mathematics.

\[VerticalLine] (Mathematica Character Name)

Unicode: 2502. Alias: Esc vline Esc. Letter-like form. Extensible character. Not the same as \[VerticalSeparator] or \[VerticalBar], which are infix operators. Not the same ...

ExportAutoReplacements (Built-in Mathematica Symbol)

ExportAutoReplacements is an option for cells that specifies which replacement rules Mathematica automatically applies when exporting text.

ImportAutoReplacements (Built-in Mathematica Symbol)

ImportAutoReplacements is an option for cells that specifies which replacement rules Mathematica automatically applies when importing text.

Trace (Built-in Mathematica Symbol)

Trace[expr] generates a list of all expressions used in the evaluation of expr. Trace[expr, form] includes only those expressions which match form. Trace[expr, s] includes ...

$LicenseExpirationDate (Built-in Mathematica Symbol)

$LicenseExpirationDate is a date list that gives the expiration date for the license under which Mathematica is being run.