SquaresR (Built-in Mathematica Symbol)

SquaresR[d, n] gives the number of ways r_d (n) to represent the integer n as a sum of d squares.

StabilityMargins (Built-in Mathematica Symbol)

StabilityMargins is an option to frequency response plots such as BodePlot, NyquistPlot, and NicholsPlot that specifies the gain and phase margins to be shown on the plot.

Stack (Built-in Mathematica Symbol)

Stack[] shows the current evaluation stack, giving a list of the tags associated with evaluations that are currently being done. Stack[pattern] gives a list of expressions ...

StatusArea (Built-in Mathematica Symbol)

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

StreamColorFunction (Built-in Mathematica Symbol)

StreamColorFunction is an option for StreamPlot and related functions that specifies a function to apply to determine colors along streamlines.

StreamPoints (Built-in Mathematica Symbol)

StreamPoints is an option to StreamPlot, ListStreamPlot, and related functions that determines how many streamlines to draw.

StringLength (Built-in Mathematica Symbol)

StringLength["string"] gives the number of characters in a string.

StringReverse (Built-in Mathematica Symbol)

StringReverse["string"] reverses the order of the characters in " string".

StringTake (Built-in Mathematica Symbol)

StringTake["string", n] gives a string containing the first n characters in " string". StringTake["string", -n] gives the last n characters in " string". StringTake["string", ...

SubsuperscriptBox (Built-in Mathematica Symbol)

x_y^z is the low-level box representation for x_y^z in notebook expressions.