Abstract: Methods and systems for creating, storing, transferring and manipulating electronic data layers employ computer hardware and software including instructions embodied in program code encoded on machine readable medium to provide, for example, one or more first layers of electronic data and one or more second layers of electronic data associated with a predetermined portion of the first layer of electronic data. The first and second layers of electronic data are stored independently of one another on the same or different databases, and the first layer of electronic data can be accessed and presented by a viewer application on a client device together with the second layer of electronic data in association with the predetermined portion of the first layer of electronic data.

Abstract: Methods and systems for annotation documents are disclosed. For example, a method for annotating a document includes creating a collaboration, adding a document to the collaboration, adding a user to the collaboration, selecting the document, creating an annotation, associating the annotation with the document, and storing the annotation on a processor-based device.