DefaultButton[] represents an OK button that closes a dialog, and is the default when DynamicBox[ToBoxes[If[$OperatingSystem === "MacOSX", "Return", "Enter"], StandardForm], ...
FunctionInterpolation[expr, {x, x_min, x_max}] evaluates expr with x running from x_min to x_max and constructs an InterpolatingFunction object which represents an ...
Gradient is an option for FindMinimum and related functions that specifies the gradient vector to assume for the function being extremized.
HermiteH[n, x] gives the Hermite polynomial H_n (x).
ImageCapture[] opens a graphical user interface for capturing images from connected cameras.
JacobiAmplitude[u, m] gives the amplitude am(u \[VerticalSeparator] m) for Jacobi elliptic functions.
JacobiNC[u, m] gives the Jacobi elliptic function nc(u | m).
Khinchin is Khinchin's constant, with numerical value \[TildeEqual] 2.68545.
LerchPhi[z, s, a] gives the Lerch transcendent \[CapitalPhi] (z, s, a).
LinkRead[link] reads one expression from the specified MathLink connection. LinkRead[link, h] wraps h around the expression read before evaluating it.