$Packages gives a list of the contexts corresponding to all packages which have been loaded in your current Mathematica session.

To run Mathematica using a network license, both the client machine and the license server must be on the network and MathLM must be running. If you do not have a MathLM ...

Mathematical Notation in Notebooks Special Characters Names of Symbols and Mathematical Objects

PaneSelector[{v_1 -> expr_1, v_2 -> expr_2, ...}, v] represents an object that displays as a pane containing the expr_i for which v_i is equal to v.

The basic idea behind the "StiffnessSwitching" method is to provide an automatic means of switching between a nonstiff and a stiff solver. The "StiffnessTest" and ...

LightweightGrid[agent] is a description of a subkernel to be launched on agent by the Lightweight Grid SystemLightweightGrid[{"Agent" -> agent, "KernelCount" -> count, ...

RemoteServices[manager] is a description of a subkernel to be launched on manager by the Lightweight Grid System.RemoteServices[{"Agent" -> agent, "KernelCount" -> count, ...

Kernel Configuration Options opens a dialog to add, remove, or edit kernel configurations.

MathematicaScript is an interpreter for standalone executable Mathematica scripts.

ColorConvert[expr, colspace] converts color specifications in expr to refer to the color space represented by colspace.