Technique for managing collaborative documents

TL;DR: In this paper, a technique for managing collaborative documents is described, where an application program comprises a document renderer component for rendering a first document instance of the collaborative documents, a document sharing component for receiving a document update list comprising a change record set of a second document instance, and an undo manager component for managing a local undo stack.

Abstract: Described is a technique for managing collaborative documents. An application program comprises a document renderer component for rendering a first document instance of the collaborative documents; a document sharing component for receiving a document update list comprising a change record set of a second document instance of the collaborative documents, and modifying one or more structural properties of the first document instance based on the change records so as to form a merged document instance of the collaborative documents; and an undo manager component for managing a local undo stack of the first document instance and determining whether one or more undo records of the local undo stack is kept or not after formation of the merged document instance, on the basis of the one or more change records, wherein the local undo stack comprises an undo record set. Other embodiments are also descried and claimed.