LibraryFunctionLoad[lib, fun, argtype, rettype] loads Wolfram Library lib and makes the library function fun available in Mathematica.
MaxRecursion is an option for functions like NIntegrate and Plot that specifies how many recursive subdivisions can be made.
Message
(Built-in Mathematica Symbol) Message[symbol::tag] prints the message symbol::tag unless it has been switched off. Message[symbol::tag, e_1, e_2, ...] prints a message, inserting the values of the e_i as ...
NHoldFirst is an attribute which specifies that the first argument to a function should not be affected by N.
PlotMarkers is an option for graphics functions like ListPlot and ListLinePlot that specifies what markers to draw at the points plotted.
Quartics is an option for functions that involve solving algebraic equations that specifies whether explicit forms for solutions to quartic equations should be given.
RandomInteger[{i_min, i_max}] gives a pseudorandom integer in the range {i_min, i_max}. RandomInteger[i_max] gives a pseudorandom integer in the range {0, ...
RandomPermutation[gr] gives a pseudorandom permutation in the permutation group gr.RandomPermutation[gr, n] gives a list of n pseudorandom permutations in the permutation ...
SplineKnots is an option for B-spline functions and graphics primitives that specifies the positions of knots.
StringFreeQ["string", patt] yields True if no substring in " string" matches the string expression patt, and yields False otherwise. StringFreeQ["string", {patt_1, patt_2, ...