AbsoluteTiming[expr] evaluates expr, returning a list of the absolute number of seconds in real time that have elapsed, together with the result obtained.

ArcTan[z] gives the arc tangent tan -1 (z) of the complex number z. ArcTan[x, y] gives the arc tangent of y/x, taking into account which quadrant the point (x, y) is in.

BubbleScale is an option to BubbleChart and related functions that specifies how the scale of each bubble should be determined from the value of each data element.

ClearAttributes[s, attr] removes attr from the list of attributes of the symbol s.

ColorQuantize[image, n] gives an approximation to image that uses only n distinct colors.

ColumnLines is an option for the low-level function GridBox which specifies whether lines should be drawn between adjacent columns.

ColumnWidths is an option for the low-level function GridBox which specifies the widths to use for columns.

CumulantGeneratingFunction[dist, t] gives the cumulant generating function for the symbolic distribution dist as a function of the variable t. ...

DeleteContents is an option for DeleteDirectory that specifies whether the contents of directories should automatically be deleted.

DiacriticalPositioning is an option for UnderscriptBox and related boxes that specifies how close diacritical characters are drawn to the base character.