This command makes a saved game description using A(which should be a string) to specify what to make it. For example: If A = "Name of player" then the game description will automatically save it as "Name of player". Also the string number you use can have an affect on what the save message is.
The number of paramaters is known, but not the type of parameters. Therefore, the parameters in the unknown commands are all set to numbers at present.
Note: The former unknown name of this command was unknown170. You can only use the name set.simple in AGI Studio 1.34 and up.