DIRECT MANIPULATION OF DISPLAYED CONTENT

A method, system, and computer-readable medium for performing direct manipulation of displayed content (e.g., dragging the displayed content or a portion thereof in a particular direction). A user may perform a variety of direct manipulations of displayed content to modify the display without separate content manipulation controls. Such direct manipulations modify the display by altering the value of content properties affecting the display. Properties can include an amplitude affecting the size or level with which information is presented (e.g., volume of audio, size of visual information), an information history that refers to a series of distinct groups of information that are related over time, and a channel that specifies which of multiple groups of information is displayed. The value of a property is modified according to the manipulations, and the display updated to reflect the new value of the property. The user can map which manipulations correspond to which properties.