Use the Virtual Book (Mathematica How To)

The Virtual Book is a browsable electronic collection of all the Mathematica tutorials, grouped according to functionality. It is an excellent place for users of all levels ...

RepeatedNull (Built-in Mathematica Symbol)

p ... or RepeatedNull[p] is a pattern object that represents a sequence of zero or more expressions, each matching p.

Missing (Built-in Mathematica Symbol)

Missing[] represents data that is missing.Missing["reason"] specifies a reason for the data being missing.Missing["reason", expr] associates the expression expr with the ...

Displaying and Printing Mathematica ... (Mathematica Tutorial)

Depending on the purpose for which you are using a Mathematica notebook, you may want to change its overall appearance. The front end allows you to specify independently the ...

Requesting Input (Mathematica Tutorial)

Mathematica usually works by taking whatever input you give, and then processing it. Sometimes, however, you may want to have a program you write explicitly request more ...

DiscreteMath`GraphPlot` (Mathematica Compatibility Information)

GraphPlot functionality is now available in the newly added built-in Mathematica kernel functions GraphPlot and LayeredGraphPlot. GraphPlot3D is now available as the newly ...

Making Definitions for Indexed Objects (Mathematica Tutorial)

In many kinds of calculations, you need to set up "arrays" that contain sequences of expressions, each specified by a certain index. One way to implement arrays in ...

Constants (Built-in Mathematica Symbol)

Constants is an option for Dt which gives a list of objects to be taken as constants.

OperatingSystem (Built-in Mathematica Symbol)

OperatingSystem is an option for file and related operations that specifies the type of operating system to use to determine file name and other conventions.

Insert > Table/Matrix > Add Column (Mathematica Menu Item)

Add Column adds a column at the cursor's insertion point in a table or matrix.