ScriptSizeMultipliers is an option for Style that specifies how much smaller to render each successive level of subscripts, etc.
SkellamDistribution[\[Mu]_1, \[Mu]_2] represents a Skellam distribution with shape parameters \[Mu]_1 and \[Mu]_2.
SplineDegree is an option for spline functions and graphics primitives that specifies the degree of polynomial basis to use.
StringFormat["string"] attempts to determine what ImportString format could be used to import the string " string".
ToDiscreteTimeModel[sys, \[Tau]] gives the discrete-time approximation with sampling period \[Tau] of the continuous-time StateSpaceModel or TransferFunctionModel object ...
ToeplitzMatrix[n] gives the n*n Toeplitz matrix with first row and first column being successive integers.ToeplitzMatrix[{c_1, c_2, ..., c_n}] gives the Toeplitz matrix whose ...
True
(Built-in Mathematica Symbol) True is the symbol for the Boolean value true.
Verbatim[expr] represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.
VertexShapeFunction is an option and property for Graph and related functions that specifies a function to use to generate primitives for rendering each vertex.
ViewPoint is an option for Graphics3D and related functions which gives the point in space from which three-dimensional objects are to be viewed.