The ornamental design for a window, as shown and described.
FIG. 1 is a front view of a window according to my design, in which the window is in an “open” configuration showing a transparent window pane or section adjacent an opaque or translucent window pane or section; and,
FIG. 2 is a front view thereof, in which the window is in a “closed” configuration showing the transparent pane or section being obscured by a further translucent or opaque window pane or section which is movable, e.g., on operation of a handle, such that the two translucent or opaque window panes are adjacent one another when seen from the front view or face of the window.
The broken lines shown in the drawings are representative of surrounding environmental structure, these being provided for illustrative purposes only and forming no part of the claimed design. The use of stippling is used to denote a translucent or opaque window pane or the like.