RangeFilter[image, r] filters image by replacing every pixel by the difference of the maximum and minimum in its range r neighborhood. RangeFilter[data, r] applies a range ...

RecordSeparators is an option for Read, Find, and related functions that specifies the list of strings to be taken as delimiters for records.

RevolutionAxis is an option for RevolutionPlot3D which specifies the revolution axis around which the curve should be rotated.

ScientificForm[expr] prints with all real numbers in expr given in scientific notation. ScientificForm[expr, n] prints with numbers given to n-digit precision.

ScriptSizeMultipliers is an option for Style that specifies how much smaller to render each successive level of subscripts, etc.

StandardDeviationFilter[image, r] filters image by replacing every value by the standard deviations of the values in its range r neighborhood. StandardDeviationFilter[data, ...

StringFormat["string"] attempts to determine what ImportString format could be used to import the string " string".

StyleDefinitions is an option for notebooks that gives definitions for the styles that can be used in a notebook.

The simplest way to mix text and formulas in a Mathematica notebook is to put each kind of material in a separate cell. Sometimes, however, you may want to embed a formula ...

Specifying patterns that involve alternatives. This defines h to give p when its argument is either a or b. The first two cases give p.