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 ...

Evaluation > Interrupt Evaluation... (Mathematica Menu Item)

Interrupt Evaluation interrupts the current operation being performed by the kernel.

ActionMenu (Built-in Mathematica Symbol)

ActionMenu[name, {lbl_1 :> act_1, lbl_2 :> act_2, ...}] represents an action menu with label name and with items labeled lbl_i that evaluates the expression act_i if the ...

BottomHatTransform (Built-in Mathematica Symbol)

BottomHatTransform[image, ker] gives the morphological bottom-hat transform of image with respect to structuring element ker.BottomHatTransform[image, r] gives the bottom-hat ...

Break (Built-in Mathematica Symbol)

Break[] exits the nearest enclosing Do, For, or While.

ButtonNotebook (Built-in Mathematica Symbol)

ButtonNotebook[] gives the notebook, if any, that contains the button which initiated the current evaluation.

CellDingbat (Built-in Mathematica Symbol)

CellDingbat is an option for Cell which specifies what dingbat to use to emphasize a cell.

CellEventActions (Built-in Mathematica Symbol)

CellEventActions is an option for Cell that gives a list of actions to perform when specified events occur in connection with a cell in a notebook.

ChartLabels (Built-in Mathematica Symbol)

ChartLabels is an option for charting functions that specifies what labels should be used for chart elements.

Circle (Built-in Mathematica Symbol)

Circle[{x, y}, r] is a two-dimensional graphics primitive that represents a circle of radius r centered at the point x, y. Circle[{x, y}] gives a circle of radius 1. ...