DockedCells is an option for notebooks that gives a list of cells that are to be displayed "docked" at the top of the notebook.
DynamicEvaluationTimeout is an option for displayed objects, cells, and notebooks that specifies the timeout in seconds for any Dynamic computations they contain.
EdgeAdd
(Built-in Mathematica Symbol) EdgeAdd[g, e] makes a graph by adding the edge e to the graph g.EdgeAdd[g, {e_1, e_2, ...}] adds a collection of edges to g.
Evaluatable is an option for Cell that specifies whether a cell should be used as input to be evaluated by the Mathematica kernel.
n!! gives the double factorial of n.
FieldSize is an option for InputField, PopupMenu, and related functions that specifies the size of the field allowed for input or contents.
FourierSeries[expr, t, n] gives the n\[Null]^th-order Fourier series expansion of expr in t. FourierSeries[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] gives the multidimensional ...
FresnelC[z] gives the Fresnel integral C(z).
FresnelS[z] gives the Fresnel integral S(z).
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 ...