264 Personal Content Experience: Managing Digital Life in the Mobile Age as a part of editing; for instance, the user may wish to emphasize a region of an image or add some text. Related to creation (as well as editing), the clipboard operations (copy, cut, and paste) are useful when writing and drawing as they aid in, for instance, duplicating or moving parts of the content easily. These are also examples of operations that are so frequently performed that any experienced user probably prefers to use shortcuts. Copy-paste operations also offer a nice example of adding metadata. If text snip- pets or parts of the image are pasted to a new content object, the ID of the source should be added as a part of the metadata in order to imply the relations between objects. In general, this relates to creation of any kind of object that is composed of (parts of) other objects (slide show, presentation, playlist, personal map). Creating a new content object by composing content objects is a task that is either related to a single content type (creating a slideshow from a set of images, a song from a set of short audio tracks (loops), or a playlist from a set of songs) or it may relate to creating a multimedia presentation with text, drawings, images, and video. Nevertheless, composing content is a question of defi ning the desired set of existing objects and their spatial, and in some cases temporal, order. Compos- ing requires searching and browsing when seeking for the objects to be included. With the aid of metadata, the system may provide an auto-sum- marizing feature that searches for the best candidates for the content. The generated set often acts as a starting point for further manual composition. Figure 6-32 depicts an example of a view that is the result of auto-summarization. Instead of using a single content format, the summary is based on time (shown on top-right corner), consisting of a map, points-of-interest, and images captured in those places. The label of an image is based on location or derived from a message that has been sent on the spot. In addition to the above-mentioned personal media, there are other personal content objects that the user may wish to create. For instance, creating a new contact or calendar event requires fi lling in textual information (name, contact information, address, birthday, and affi lia- tion), as well as perhaps attaching another objects. Or the user may wish to create a personal ring tone by composing a MIDI song. Another increasingly important example is creating a point-of-inter- est to a certain geographical location (POIs are discussed in more detail in section 7.2). The simplest way is to get the current coordinates and store them for later use, but it may be reasonable to attach some label that describes the place and implies its relevancy. The label could be textual, which will make the search easier, but it could also be an image