Note: This function is only used for V3.xx and V4.xx animations, and was superseded in later releases.
Creates an AN at the specified x and y coordinates.
The x pixel coordinate where the new AN is created.
The y pixel coordinate where the new AN is created.
If successful, the new AN is returned. If the AN cannot be created, -1 is returned. If an AN already exists at this location, that AN is returned.
/* Displays symbol 20 at pixel location 100,200 */