As of Version 8, much of the functionality covered by Combinatorica has been implemented in the Mathematica kernel. BooleanAlgebra CodeToLabeledTree HasseDiagram ...

SystemInformation[] gives detailed information about the Mathematica system being run. SystemInformation["comp"] gives a list of rules with information about the component " ...

As of Version 7, the Bar Charts Package has been integrated into the Mathematica kernel.

MeanTest is superseded by the Mathematica kernel functions LocationTest, TTest, and ZTest. MeanDifferenceTest is superseded by the Mathematica kernel functions ...

End[] returns the present context, and reverts to the previous one.

MultiPoissonDistribution has been renamed to MultivariatePoissonDistribution and is part of the built-in Mathematica kernel. HotellingTSquareDistribution has been added to ...

Mathematica's core language and computation capabilities can be accessed not only through its rich interactive notebook interface, but also directly through a command-line ...

As of Version 7, the Vector Field Plotting Package has been integrated into the Mathematica kernel.

$ContextPath is a global variable that gives a list of contexts, after $Context, to search in trying to find a symbol that has been entered.

Manual represents an option or other value that is to be selected manually, usually by some form of interactive manipulation.