Raster[{{a_11, a_12, ...}, ...}] is a two-dimensional graphics primitive which represents a rectangular array of gray cells. Raster[{{{r_11, g_11, b_11}, ...}, ...}] ...

Mathematica symbols are the ultimate atoms of symbolic data. Every symbol has a unique name, exists in a certain Mathematica context or namespace, and can have a variety of ...

ArrayDepth[expr] gives the depth to which expr is a full array, with all the parts at a particular level being lists of the same length, or is a SparseArray object.

__(two _characters) or BlankSequence[] is a pattern object that can stand for any sequence of one or more Mathematica expressions. __h or BlankSequence[h] can stand for any ...

ButtonNotebook[] gives the notebook, if any, that contains the button which initiated the current evaluation.

Extract[expr, list] extracts the part of expr at the position specified by list. Extract[expr, {list_1, list_2, ...}] extracts a list of parts of expr. Extract[expr, list, h] ...

LinkWrite[link, expr] writes expr to the specified MathLink connection.

OddQ[expr] gives True if expr is an odd integer, and False otherwise.

p : v is a pattern object that represents an expression of the form p, which, if omitted, should be replaced by v.

PermutationCyclesQ[expr] returns True if expr is a permutation in disjoint cyclic form, and False otherwise.