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DEF sysvar= Directives
Define System Variables
Formats
1. Set Contents of CTL Variable: DEF CTL = num
2. Set Contents of ERR Variable: DEF ERR = num
3. Set Contents of LFO Variable: DEF LFO = num
4. Set Contents of LFA Variable: DEF LFA = num
5. Set Contents of EOM Variable: DEF EOM = strvar$
6. Set Contents of RET Variable: DEF RET = nuim
Where:
num
Numeric value for setting selected variable.
strvar$
String value for setting selected variable.
Description
Use these DEF formats to define the contents of the specified system variable:
DEF CTL
Numeric code (integer) that represents a signal of user input from the
keyboard or mouse.
DEF ERR
Numeric value (integer) that indicates the last system-detected error.
DEF LFO
Channel/file number of the last file opened.
DEF LFA
Channel/file number of the last file or device accessed.
DEF RET
Operating system's error code associated with the last operating call.
See Also