V4.8 Beginner's orientation in the classroom

V4.7 New Layout for Shared Receiver Interface

V4.6 Customize the size of the answer sheet

V4.5 Class scheduling in the client

V4.4 Drawing Board Performance Upgrade

V4.3 Use tools in screen-sharing mode

V4.2 Video on Stage in Sharing Mode

V4.1 Patched Geometry

V4.0 New Home Page

V3.17 Red Packets