(1) If a file was being loaded from the disk the end of the file was encountered unexpectedly. (2) If a program is reading a file this error code merely indicates that the end of the file has been reached and should not be interpreted as a real error. (3) This message results if a CTRL+Z is pressed in response to a program PROMPT. (4) A break condition was detected on a serial line.User action: (1) Try again to read the file. (2) Close the file and continue program execution. (3) Treat the program as having been aborted early by user request.