  1     Not owner of file
  2     No such file
  3     Too many ISAM files, or no such process
  5     Physical I/O error
  9     Incorrect mode or file descriptor
 13     Attempt to access a file with incorrect permission
 17     File already exists
 21     File is a directory
 24     Too many open files
 28     No space on device
 30     File system is read-only
 65     ISAM - File locked
 66     ISAM - Attempted to add duplicate record key
 67     ISAM - File not open
 68     ISAM - Record locked
 69     ISAM - Illegal argument to ISAM module
 70     ISAM - Too many files open
 71     ISAM - Bad isam file format
 72     ISAM - End of file
 73     ISAM - No record found
 74     ISAM - No current record
 75     ISAM - Data file name too long
 76     ISAM - Can't creat lock file in /isam
 77     ISAM - Internal isam error
 78     ISAM - Illegal key descriptor
 79     ISAM - Is primary key
 80     ISAM - Non-exclusive access
 81     ISAM - Key already exists
150     Animator load error
151     Random read on sequential file
152     Rewrite on file not opened I/O
153     Subscript out of range
154     Perform nesting exceeds maximum level
155     Illegal command line
156     Invalid file operation
157     Object file too large
158     Rewrite on line sequential file
159     Malformed line sequential file
160     Overlay loading error
161     Illegal  intermediate code
162     Arithmetic overflow or underflow
164     Specified call code not supplied
165     Incompatible releases of compiler and RTS
166     Attempt to open file which is already open
170     Illegal operation in indexed sequential
172     Attempt to call active program
173     Intermediate code file not found
174     Intersegment reference table not found
180     COBOL file malformed
181     Fatal file malformation
182     Open CI or CO in wrong direction
183     Attempt to open LS file for I-O
184     Accept/Display I-O error
185     Can't load COBOL rts module
186     Internal rts error - should not occur!
187     Version 3 subset error
188     Filename too big
189     Intermediate code load error
190     Too many arguments to CALL
191     Terminal type not defined, or not in termcap file
192     Required terminal capability description missing
193     Null file name used in a file operation
194     Memory allocation error
195     Dictionary error
196     Not implemented in this RTS release
197     Intermediate code paging error
198     Intermediate code not compiled for paging
