IBM 3742 Reference Manual page 29

Switch
AUTO DUP/SKIP
AUTO REC ADV
Function
When in the OFF position, all skip
and dup fields are treated as manual
fields. When in the ON position,
skip and dup fields are handled as
programmed.
When in the ON position and either
the end
o~
the logical record or an
E in the program is encountered,
the data that has been keyed is
automatically written on disk.
PROG NUM SH I FT This switch is active only when
under program numeric shift con-
trol. When in the NUMBERS ONLY
position, only the characters 0
through 9, dash (-), space, and
plus
(+)
are valid. When in the ALL
CHAR position, there is no charac-
ter restriction.
Figure 18. Switch Functions
DISPLA Y FIELD PROG: Use this key to display up to
30 characters of the current program field in the last 30
positions of line 5 on the display screen.
DISPLA Y FIELD TOTALS: Use this key to display the
three field total accumulators when the cursor is at the
beginning of a field. To remove the field totals data from
the display and redisplay the data record, press RESET or
R.
R resets the accumulators to zero; RESET does not.
DISPLA Y FIELD NAME: Use this key to display up to 30
characters of a prompting message in the last 30 positions
of line 5 on the display screen.
DISPLA Y PROG: Use this key to display the current
program.
DISPLA Y PROD STAT: Use this key to display production
statistics in read index or enter mode.
DELETE REC: Use this key during update and verify
modes to delete records on the disk. Use it during read
index, enter, or search mode to blank the display.
DUP: Use this key in the enter or update mode to copy
data already entered in the previous record. Pressing DUP
and NUM SH I FT at the same time causes auxiliary duplica-
tion of data from program buffer 4. In both cases, data is
copied from the present field position to the end of the
field. In a right-adjust or self check field, this key is only
valid in the first position.
Press this key in verify mode to automatically verify the
data in the present field position to the end of the field.
The characters in the current record buffer are compared
with the corresponding characters in the previous record
buffer. If the characters differ, the cursor stops in the
position that is different, and a V error occurs.
ENTER: Press this key from the index track to enter a
new data set.
FIELD ADV: Use this key to move the cursor to the first
position of the next manual field without changing the data
in the field from which the advance is made. FIELD ADV
is invalid in verify mode, giving an L error.
FIELD BKSP: Use this key to move the cursor back to the
first position of the current field. If the cursor is already
in the first position of the current field, the key moves the
cursor back to the first position of the previous manual
field. Field backspacing over a record boundary is not
permitted. If it is attempted, no action occurs except that
in verify mode the leading auto fields are executed.
FIELD COR: Use this key during the verify mode to save
time when making several corrections to a field. Pressing
this key changes the mode of operation from verify to field
correct. The cursor moves to the first position of the
current field. The record is displayed up to, but not includ-
ing, the cursor position. After the entire field is keyed, the
cursor returns to the first position of the field, and the
machine returns to verify mode.
HEX: Use this key to enter anyone of the 256 EBCDIC
codes. Press H EX followed by two hexadecimal digits;
repeat this for each two hexadecimal digits. The hexadeci-
mal digits are 0 through 9 and A through F. Hexadecimal
D can be entered by pressing the dash (-) key.
Operator Interface 23