Collaborative writing is an interest in the study of computer supported cooperative work (CSCW) and groupware raised in mid 1980s, among variant aspects of CSCW, collaborative writing emphasizes on a group editing environment for synchronous and asynchronous collaborative document development. For tools supporting collaborative writing, studies and pioneered pplications have suggested required functions: roles, communication support, permission control, track changes, change representations, version control, comment, and revision history. Among them, few efforts have been done in the representations of changes. This thesis intends to design a way to better represent changes of documents, and for subjects in collaborative writing to better interact with changes of documents. The result is represented as GUI mockups, which visualizes differences between revisions.

Asiasanat:Change representations, collaborative writing, groupware, cscw