ShearingTransform[\[Theta], v, n] gives a TransformationFunction that represents a shear by \[Theta] radians along the direction of the vector v, normal to the vector n, and ...
ShowAutoStyles is an option for Cell that specifies whether styles that are specified to be automatically used for various syntactic and other constructs should be shown.
Skip
(Built-in Mathematica Symbol) Skip[stream, type] skips one object of the specified type in an input stream. Skip[stream, type, n] skips n objects of the specified type.
SoundVolume is an option to Sound and SoundNote and related functions that specifies the relative volume of the sound produced.
Sphere
(Built-in Mathematica Symbol) Sphere[{x, y, z}, r] represents a sphere of radius r centered at (x, y, z). Sphere[{x, y, z}] represents a sphere of radius 1. Sphere[{{x_1, y_1, z_1}, {x_2, y_2, z_2}, ...}, ...
StackBegin[expr] evaluates expr, starting a fresh evaluation stack.
StreamColorFunction is an option for StreamPlot and related functions that specifies a function to apply to determine colors along streamlines.
StringCases["string", patt] gives a list of the substrings in " string" that match the string expression patt. StringCases["string", lhs -> rhs] gives a list of the values of ...
s_1 ~~ s_2 ~~ ... or StringExpression[s_1, s_2, ...] represents a sequence of strings and symbolic string objects s_i.
String
(Built-in Mathematica Symbol) String is the head of a character string " text".