System Control Keys - HP 9000 200 Series Manual

System Control Keys
Four unlabeled keys directly above the numeric keypad control various system functions
related to the display, printer, and editing operations. Most of these keys execute their
functions immediately, as the key is pressed.
To easily identify the keys in the following description, we'll use this convention:
• Key I-Above the
0
key (labeled Recall on the overlay).
• Key 2-Above the [ZJ key (labeled Alpha/Dump Alpha on the overlay).
• Key 3-Above the
CD
key (labeled Graphics/Dump Graph on the overlay).
• Key 4 Above the
0
key (labeled RES on the overlay).
Key
1-Recall Pressing unshifted-Key 1 (Recall) recalls the last line that you
entered, executed, or deleted. Several previous lines can be recaBed
this way. Recall is particularly handy to use when you mistype a
line. Instead of retyping the entire line, you can recall it, edit it
using the editing keys, and enter or execute it again.
Type:
PRINT "1"
I
Return
I
to print the number
1
on the screen. Now press Key 1 to recall
the print statement. Edit the statement to print the number
2
by
positioning the cursor under the
1
and typing
W
over it. Press
I
Return
I
again.
N ow press Key 1 several times to see all of the
statements it remembers. Then press
I
Clear display
I
when finished.
I
Shift ~Key
1 moves forward through the recall stack.
Pressing
[1[J
in the System menu performs the same recall function
as Key 1.
7-10
ITF Keyboards