WindowSize is a notebook option that specifies the size of window that should be used to display a notebook on the screen.
WindowStatusArea is a notebook option that specifies what should appear in the status area in the frame of the window used to display the notebook.
WindowTitle is an option that specifies the title to give for a window.
WindowToolbars is a notebook option that specifies the toolbars to include at the top of the window used to display the notebook on the screen.
With
(Built-in Mathematica Symbol) With[{x = x_0, y = y_0, ...}, expr] specifies that in expr occurrences of the symbols x, y, ... should be replaced by x_0, y_0, ....
WolframAlpha["query"] sends query to Wolfram|Alpha and imports the output.WolframAlpha["query", format] imports the output according to the specified format.
WordBoundary represents a boundary between words for purposes of matching in StringExpression.
WordCharacter represents a letter or digit character in StringExpression.
WordData["word", " property"] gives the specified property for the English word " word".WordData["word"] gives a list of full word specifications representing possible uses ...
Word
(Built-in Mathematica Symbol) Word represents a word in Read, Find, and related functions.