Instead, this menu is the place where daVinci application programs, connected to the API, are able to attach their own menus. So entries in this menu are specific to a connected application and cannot be described here. Refer to the manual of the particular application for details.
One important daVinci application is the graph editor which is part of the daVinci distribution. The editor takes advantage of the API's menu feature and attaches its operation to the edit menu. Refer to the graph editor documentation for details.