Alphabet Keys - IBM 3270 Operator's Manual

ALT(Shift) Key
The ALT (Alternate) Shift key is used to enable the alternate function keys. The
alternate function keys are the keys that have a function name or a symbol on
the front of them: SYS REQ, CLEAR, ERASE INPUT, ALT CURSR, IDENT,
TEST, DEV CNCL, Double-Speed Horizontal Positioning (~and ....... ), and
o
(Home). To cause the function on an alternate function key to be per-
formed, you must press and hold the ALT key down and press the desired
alternate function key.
Alphabet Keys
All but two of the Alphabet keys (A and Z) are dual-character keys. (See
Figure 3-15.) The alpha character (on the lower half of the key face) will
display when the key is pressed while the keyboard is in Alphabetic Mode (its
normal mode). When pressed while the keyboard is in Numeric Mode, each of
these keys displays the digit or symbol on the upper half of the key face.
Remember that the keyboard is in Numeric Mode (1) when.the Numeric
Shift (
0 )
key is being held down, (2) when the Numeric Lock
(l£J )
key has been pressed once, or (3) whenever the cursor is in a formatted numeric
field. All alphabetic characters are always displayed as capital letters. All the
Alphabetic keys are typamatic if held down.
Figure 3-15. Alphabet Keys
3-20