DynamicSetting[e] represents an object which displays as e, but is interpreted as the dynamically updated current value of Setting[e] if supplied as Mathematica ...
EmitSound[snd] emits the sound snd when evaluated. EmitSound[{snd_1, snd_2, ...}] emits each of the sounds snd_i in sequence.
ExtendedGCD[n_1, n_2, ...] gives the extended greatest common divisor of the integers n_i.
FileNameDrop["name", n] drops the first n path elements in the file name " name".FileNameDrop["name", -n] drops the last n path elements in the file name " ...
FileNameSplit["filename"] splits a file name into a list of parts.
Grid
(Built-in Mathematica Symbol) Grid[{{expr_11, expr_12, ...}, {expr_21, expr_22, ...}, ...}] is an object that formats with the expr_ij arranged in a two-dimensional grid.
x++ increases the value of x by 1, returning the old value of x.
Interpretation[e, expr] represents an object that displays as e, but is interpreted as the unevaluated form of expr if supplied as input. Interpretation[{x = x_0, y = y_0, ...
LinkReadyQ[link] tests whether there is an expression ready to read from the specified MathLink connection. LinkReadyQ[link, t] waits for up to t seconds to see if an ...
MapIndexed[f, expr] applies f to the elements of expr, giving the part specification of each element as a second argument to f. MapIndexed[f, expr, levelspec] applies f to ...