AccountingForm[expr] prints with all numbers in expr given in standard accounting notation. AccountingForm[expr, n] prints with numbers given to n-digit precision.
Cycles
(Built-in Mathematica Symbol) Cycles[{cyc_1, cyc_2, ...}] represents a permutation with disjoint cycles cyc_i.
Cyclotomic[n, x] gives the n\[Null]^th cyclotomic polynomial in x.
FactorialPower[x, n] gives the factorial power x (n). FactorialPower[x, n, h] gives the step-h factorial power x (n, h).
FractionalPart[x] gives the fractional part of x.
KirchhoffMatrix[g] gives the Kirchhoff matrix of the graph g.
ListDensityPlot[array] generates a smooth density plot from an array of values. ListDensityPlot[{{x_1, y_1, f_1}, {x_2, y_2, f_2}, ...}] generates a density plot with values ...
RandomChoice[{e_1, e_2, ...}] gives a pseudorandom choice of one of the e_i. RandomChoice[list, n] gives a list of n pseudorandom choices. RandomChoice[list, {n_1, n_2, ...}] ...
Scan
(Built-in Mathematica Symbol) Scan[f, expr] evaluates f applied to each element of expr in turn. Scan[f, expr, levelspec] applies f to parts of expr specified by levelspec.
Spacings is an option to Grid and related constructs that specifies the spacings to leave between successive objects.