StatusArea[expr, string] displays string in the status area of the current notebook when the mouse pointer is in the region where expr appears.

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

TrackedSymbols is an option to Refresh, Manipulate, and related functions that specifies which symbols should trigger updates when their values are changed.

UnderscriptBox[x, y] is the low-level box representation for UnderscriptBox[x, y] in notebook expressions.

Methods for generating hyperlinks. A hyperlink is a special kind of button which jumps to another part of a notebook when it is pressed. Typically hyperlinks are indicated in ...

These "How tos" give step-by-step instructions for common tasks related to editing and manipulating graphics in Mathematica .

Initialization Cell makes a cell auto-evaluate whenever the notebook is opened and the kernel is launched.

Initialization Group makes the cells in a group auto-evaluate whenever the notebook is opened and the kernel is launched.

AnimationCycleOffset is an option for cells that specifies the relative position of the next graphic to be used in an animation sequence.

BinaryImageQ[image] yields True if image has the form of a binary image, and False otherwise.