PrintAction is an option for notebooks that specifies the action taken when a Print[] command is evaluated by the kernel.
Protected is an attribute which prevents any values associated with a symbol from being modified.
expr //. rules repeatedly performs replacements until expr no longer changes.
SampledSoundFunction[f, n, r] is a sound primitive that represents a sound whose amplitude sampled r times a second is generated by applying the function f to successive ...
SetSelectedNotebook[notebook] makes the specified notebook be the currently selected one in the front end.
Spacer
(Built-in Mathematica Symbol) Spacer[w] displays as a spacer w printer's points wide.Spacer[{w, h}] displays as a spacer w points wide and a total of h points high.Spacer[{w, h, dh}] makes the spacer ...
SystemInformation[] gives detailed information about the Mathematica system being run. SystemInformation["comp"] gives a list of rules with information about the component " ...
Through
(Built-in Mathematica Symbol) Through[p[f_1, f_2][x]] gives p[f_1[x], f_2[x]]. Through[expr, h] performs the transformation wherever h occurs in the head of expr.
TransformationMatrix[tfun] gives the homogeneous matrix associated with a TransformationFunction object.
WindowSize is a notebook option that specifies the size of window that should be used to display a notebook on the screen.