An electronic device with a display bounded by a plurality of edges: displays a first portion of a first window on the display while not displaying a remaining portion of the first window on the display, wherein: the remaining portion of the first window extends in a virtual sense beyond at least one edge of the display; detects a first input that positions a cursor at a location on the display, the location being: over the displayed first portion of the first window, and within a predefined distance of an edge of the display; in response to detecting the first input that positions the cursor at the location on the display, activates a window adjustment mode; while the window adjustment mode is active, detects a second input; and, in response to detecting the second input, adjusts the first window in accordance with the second input.