CODE, a Col-laborative Document Editorwhich will be developed as a projectfor CSE223B - Distributed Computing and Systems course.We will utilise Google’s Operational Transformation to ensureconsistency across multipleCODEclient UIs. Furthermore, thefault-tolerance and resilience of the back-end will be based partlyon the design of theTribblerback-end, a system developed in theLabs for the same course.