MenuView[{lbl_1 -> expr_1, lbl_2 -> expr_2, ...}] represents an object in which selecting the menu item with label lbl_i displays expr_i. MenuView[{lbl_1 -> expr_1, lbl_2 -> ...
PermutationListQ[expr] returns True if expr is a valid permutation list and False otherwise.
$SharedFunctions is the list of functions currently being shared among parallel kernels.
$SharedVariables is the list of variables currently being shared among parallel kernels.
BooleanVariables[expr] gives a list of the Boolean variables in the Boolean expression expr.BooleanVariables[bf] gives the number of Boolean variables in the BooleanFunction ...
Finding and setting values of symbols. Mathematica effectively stores all definitions you give as lists of transformation rules. When a particular symbol is encountered, the ...
VertexList[g] gives the list of vertices for the graph g.VertexList[g, patt] gives a list of vertices that match the pattern patt.
EdgeList[g] gives the list of edges for the graph g. EdgeList[g, patt] gives a list of edges that match the pattern patt.
Most
(Built-in Mathematica Symbol) Most[expr] gives expr with the last element removed.
AddTo
(Built-in Mathematica Symbol) x += dx adds dx to x and returns the new value of x.