1. A computer program product comprising one or more computer-readable physical storage media having stored thereon computer-executable instructions that are executable by one or more processors of a computing system to cause the computing system to perform a method for supporting an organization mode in which a plurality of user interface elements may be organized within a user interface, the method comprising: an act of displaying a canvas on the user interface, the canvas being subdivided into at least an extendable start board portion and a constituent element portion, the extendable start board portion being displayed simultaneously with the constituent element portion on the canvas, wherein: upon selection of any one user interface element in the extendable start board portion, the constituent element portion is updated to include a group of user interface elements that each corresponds to the selected any one user interface element, a size of the constituent element portion is dependent on a size of the extendable start board portion such that as the size of the extendable start board portion increases, the size of the constituent element portion decreases in response, and when the size of the constituent element portion decreases, an appearance of at least some elements in the group of user interface elements included in the constituent element portion is progressively cutoff to coincide with the decreasing size of the constituent element portion; an act of displaying a plurality of user interface elements on the extendable start board portion of the canvas so as to conform to a grid pattern having a plurality of grid positions on the extendable start board portion, each of the plurality of user interface elements occupying one or more of the grid positions of the plurality of grid positions and having boundaries corresponding to boundaries between grid positions; an act of detecting a user instruction representing an intent to organize one or more of the plurality of user interface elements on the canvas, the user interface entering the organization mode after the user instruction is received; an act of causing an appearance of at least some remaining user interface elements in the plurality to change such that the appearances are deemphasized, the at least some remaining user interface elements being elements that were not associated with the user instruction; an act of causing at least some of the plurality of grid positions to be displayed in response to the act of detecting the user instruction; and while in the organization mode and in response to selecting a particular user interface element, an act of causing a contextual actions menu to appear for the particular user interface element, the contextual actions menu displaying a subset of available commands, the displayed subset of available commands being commands that have been previously identified as being commonly used by a user while the user interacts with the user interface in the organization mode, the contextual actions menu being displayed simultaneously with the particular user interface element.