In the documentation, Adventuron - Targetting 8-Bit Micros 3.9.4. Auto Redescribe mode (Beta):
For games that enable auto-describe mode, you need to call : success at the end of any code block that creates or destroys an object in the current location.
In 8-bit compatibility mode, adventuron will automatically refresh the screen when you use a : success command.
The term "success" and "sucess command" designates, I suppose, "Done;", but it's not very clear because you don't use this term elsewhere, and it doesn't refer to anything known in other Adventuron documentations.