FullForm[expr] prints as the full form of expr, with no special syntax.
HotellingTSquareDistribution[p, m] represents Hotelling's T^2 distribution with dimensionality parameter p and m degrees of freedom.
Hypergeometric2F1[a, b, c, z] is the hypergeometric function \[InvisiblePrefixScriptBase]_2 F_1 (a, b; c; z).
MoyalDistribution[\[Mu], \[Sigma]] represents a Moyal distribution with location parameter \[Mu] and scale parameter \[Sigma].
PathGraph[{v_1, v_2, ...}] yields a path with vertices v_i and edges between v_i and v i +\[ThinSpace]1 .PathGraph[{e_1, e_2, ...}] yields a path with edges ...
PowerDistribution[k, a] represents a power distribution with domain parameter k and shape parameter a.
Sech
(Built-in Mathematica Symbol) Sech[z] gives the hyperbolic secant of z.
StateSpaceTransform[ss, s_1] transforms the StateSpaceModel object ss using the similarity matrix s_1.StateSpaceTransform[ss, {s_1, s_2}] computes the transformation using ...
Tanh
(Built-in Mathematica Symbol) Tanh[z] gives the hyperbolic tangent of z.
WaringYuleDistribution[\[Alpha]] represents the Yule distribution with shape parameter \[Alpha].WaringYuleDistribution[\[Alpha], \[Beta]] represents the Waring distribution ...