Expression and Effect Show of Original Version in Cooperative Multi-versioning Technique

This paper first discusses the progress and existing problems in the study of cooperative graphics editing systems (CGES), then the necessity of original version based on cooperative multiple versions which is ground on version replication is proposed to deal with the conflicting features and types of concurrent operations in CGES. The method for expressing original version is further discussed, and an algorithm of showing the effect of original version is devised and analyzed with examples.