$SessionID (Built-in Mathematica Symbol)

$SessionID is a number set up to be unique to a particular Mathematica session.

FractionBoxOptions (Built-in Mathematica Symbol)

FractionBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for cells that specifies settings for FractionBox objects within the cell.

RankKSetPartition (Combinatorica Package Symbol)

RankKSetPartition[sp, s] ranks sp in the list of all k-block set partitions of s. RankSetPartition[sp] ranks sp in the list of all k-block set partitions of the set of ...

Unset (Built-in Mathematica Symbol)

lhs =. removes any rules defined for lhs.

$Post (Built-in Mathematica Symbol)

$Post is a global variable whose value, if set, is applied to every output expression.

\[Mho] (Mathematica Character Name)

Unicode: 2127. Alias: Esc mho Esc. Letter-like form. Used to denote the inverse ohm unit of conductance. "Mho" is "ohm" spelled backwards. Occasionally called 'agemo' in pure ...

AutoOpenNotebooks (Built-in Mathematica Symbol)

AutoOpenNotebooks is a global option that specifies which notebooks should be automatically opened when Mathematica is started.

PrintingCopies (Built-in Mathematica Symbol)

PrintingCopies is an option for notebooks that specifies the number of copies of a notebook printed when a print command is given.

DefaultElement (Built-in Mathematica Symbol)

DefaultElement is an option for Grid and related constructs which specifies what to insert when a new element is interactively created.

OutputAutoOverwrite (Built-in Mathematica Symbol)

OutputAutoOverwrite is an option for notebooks that specifies whether the output of a command should replace any existing output from a previous evaluation.