This room version builds on version 1 with an improved state resolution algorithm. Client considerations There are no client considerations introduced in this room version. Clients which implement the redaction algorithm locally should refer to the redactions section below for a full overview of the algorithm. Server implementation components The information contained in this section is strictly for server implementors. Applications which use the Client-Server API are generally unaffected by ...| Matrix Specification
Rooms are central to how Matrix operates, and have strict rules for what is allowed to be contained within them. Rooms can also have various algorithms that handle different tasks, such as what to do when two or more events collide in the underlying DAG. To allow rooms to be improved upon through new algorithms or rules, “room versions” are employed to manage a set of expectations for each room. New room versions are assigned as needed.| Matrix Specification