13. One or more non-transitory computer-readable media storing a first application for execution by one or more processors of a computing device comprising a touch screen display, the first application comprising instructions for: after the first application is opened, entering a first application state comprising a plurality of content item collection indicators displayed on the touch screen display; after entering the first application state, detecting a first touch gesture directed to one content item collection indicator of the plurality of content item collection indicators; wherein each content item collection indicator, of the plurality of content item collection indicators, represents one content item collection, of a plurality of content item collections, under management of a content management system; wherein performance of an earlier touch gesture directed to a graphical representation of a content item, displayed on the touch screen display, by a second application of the computing device that is not the first application, causes the first application to open and enter the first application state; after detecting the first touch gesture, assigning a copy of the content item to the content item collection, of the plurality of content item collections, represented by the one content item collection indicator to which the first touch gesture is directed.
13. One or more non-transitory computer-readable media storing a first application for execution by one or more processors of a computing device comprising a touch screen display, the first application comprising instructions for: after the first application is opened, entering a first application state comprising a plurality of content item collection indicators displayed on the touch screen display; after entering the first application state, detecting a first touch gesture directed to one content item collection indicator of the plurality of content item collection indicators; wherein each content item collection indicator, of the plurality of content item collection indicators, represents one content item collection, of a plurality of content item collections, under management of a content management system; wherein performance of an earlier touch gesture directed to a graphical representation of a content item, displayed on the touch screen display, by a second application of the computing device that is not the first application, causes the first application to open and enter the first application state; after detecting the first touch gesture, assigning a copy of the content item to the content item collection, of the plurality of content item collections, represented by the one content item collection indicator to which the first touch gesture is directed. 21. The one or more non-transitory computer-readable media of claim 13 , wherein the first application opens and enters the first application state, in response to performance of the earlier touch gesture.