Protecting Data from Being Overwritten
Operation
4
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Screen
Register
Title
Range
Available?
Key Sequence
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Save
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
STATE
INTRNL
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Recall
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
INTERNAL
STATE
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Save
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Trace
Intrnl
FFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFF
TRACE A
TRACE B
4
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Recall
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Internal
Trace
FFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFF
TRACE A
TRACE B
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Save
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Trace
Intrnl
FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
LIMIT LINES
4
5
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Recall
Internal
!
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Internal
Trace
FFFFFFFFFFFFFFFFFFFFFFFFFFFFF
LIMIT LINES
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
CATALOG REGISTER
Saving, Recalling, and Outputting Data
4
5
4
5
FFFFFFFFFFFFFFFFFFF
TRACE C
5
FFFFFFFFFFFFFFFFFFF
TRACE C
4
5
4
5
4
5
11-11