Character Keys; Function Keys - IBM 3742 Reference Manual

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Figure 16. 3742 Keyboard with 128 Feature
Character Keys
All character keys except A and Z have dual character
capability, as indicated on the key , provided by two shifts,
alpha and numeric. Normally the shift is determined by
the active program; however, pressing the alpha or numeric
keys overrides the program shift selection .
Function Keys
Function keys, used alone or in combination with other
function keys or character keys, define a specific function
or feature operation to the 3741 or 3742.
ALPHA SHIFT: Use this key to override programmed
numeric shift. Simultaneously hold down ALPHA
SH I FT and the desi red character key.
CHAR ADV:
Use this key to move the cursor forward one
position without changing the data stored in the present
position . This key is invalid in verify mode, giving an L
error.
CHAR BKSP:
Use this key to return the cursor to the
previous manual position . If the cursor is in the first
manual position of a record, the CHAR BKSP is ignored,
except in verify mode where leading auto fields are re-exe-
cuted.
COMM: Use this key to place the 3741 Model 2 in commun-
ications mode .
COMPUTE FIELD TOTALS:
Use this key to perform
offline field totals in read index or update mode .
Operator Interface 21