IntegerPart[x] gives the integer part of x.
LevyDistribution[\[Mu], \[Sigma]] represents a Lévy distribution with location parameter \[Mu] and dispersion parameter \[Sigma].
LinkPatterns[link] gives a list of the patterns for which definitions were set up when the external program associated with the specified MathLink connection was installed.
LiouvilleLambda[n] gives the Liouville function \[Lambda](n).
MathieuGroupM12[] represents the sporadic simple Mathieu group M_12.
PageWidth is an option for output streams and for cells which specifies how wide each line of text should be allowed to be.
PauliMatrix[k] gives the k\[Null]^th Pauli spin matrix \[Sigma]_k.
PrimitiveRoot[n] gives the smallest primitive root of n.
PrintAction is an option for notebooks that specifies the action taken when a Print[] command is evaluated by the kernel.
PrintingStartingPageNumber is an option for notebooks that specifies what number to assign to the first page of a notebook when printed.