CONTENT PREVIEW
Methods, systems and machine readable tangible storage media that can provide one or more previews of content of a file or other object are described. In one embodiment, a preview of content of external data that is referenced by a link within a document is presented while the document is presented (e.g. displayed) by a first application, and the preview can be displayed in a bubble that is adjacent to and points to the link; the content of the external data is not accessible to the first application in one embodiment and the preview is presented by a non-native application or service which cannot create or edit the content of the external data. Other embodiments are also described.