1 - ^C                         21 - DEVICE IN USE
 2 - SYSTEM ERROR               22 - ILLEGAL USER CODE
 3 - OUT OF MEMORY              23 - PROTECTION VIOLATION
 4 - OUT OF DATA                24 - WRITE PROTECTED
 5 - NEXT W/O FOR               25 - FILE TYPE MISMATCH
 6 - RETURN W/O GOSUB           26 - DEVICE DOES NOT EXIST
 7 - RESUME W/O ERROR           27 - BITMAP KAPUT
 8 - SUBSCRIPT OUT RANGE        28 - DISK NOT MOUNTED
 9 - FLOAT OVERFLOW             29 - FILE ALREADY EXISTS
10 - DIVIDE BY ZERO             30 - REDIMENSIONED ARRAY
11 - ILLEGAL FUNC VALUE         31 - ILLEGAL RECORD NUMBER
12 - XCALL SUB NOT FND          32 - INVALID FILENAME
13 - FILE ALREADY OPEN          33 - STACK OVERFLOW
14 - IO TO UNOPENED FILE        34 - INVALID SYNTAX CODE
15 - RECORD SIZE OVERFLOW       35 - UNSUPPORTED FUNCTION
16 - FILE SPEC ERROR            36 - INVALID SUBROUTINE VERSION
17 - FILE NOT FOUND
18 - DEVICE NOT READY           ERR(0) - ERROR CODE (AS ABOVE)
19 - DEVICE FULL                ERR(1) - LAST LINE NUMBER ENCOUNTERED
20 - DEVICE ERROR               ERR(2) - LAST FILE NUMBER ACCESSED