Spacebar; Cursor Control; New Line; Tab - IBM 3180 1 User Manual

Spacebar
When the spacebar is pressed, a space is entered on the
screen and replaces whatever character is present in that
position (even if that character is not displayed on the
screen; for example, a character in a nondisplay field). For
this reason, the spacebar should not be used to position
the cursor. The spacebar is typematic if held down.
Cursor Control
These keys have a common function. They provide a
means of positioning the cursor without affecting any of
the information already on the screen.
New Line
The New Line key moves the cursor to the first input
character location of the next line in which you can type.
This new cursor location depends on the existing data
displayed and on the screen format.
—K
Tab
The tab keys move the cursor to the right to the first
character location of the next input field. The tab keys
move the cursor to the first location on line 1 if the screen
is not formatted or if there are no input fields. Tab keys
are typematic which allows you to move the cursor
quickly from field to field.
Back Tab
The Back Tab key moves the cursor left to the first
character position in an input field.
If the cursor is already in the first character position of an
input field, and if you press the Back Tab key, the cursor
moves left to the first character position of the preceding
input field.
The Back Tab key moves the cursor to the first location
on line 1 if the screen is not formatted or if there are no
input fields. The Back Tab key is also typematic which
allows you to move the cursor quickly from field to field.
Home
Pressing the Home key while holding an Alt key down
moves the cursor to the first input character location on
your screen. If your screen is unformatted or if there are
no input fields, pressing the Home key moves the cursor
to the first location on line 1.
Horizontal Positioning
Pressing either of the two horizontal positioning keys
moves the cursor in the direction of the arrow, one
character position at a time. The keys are typematic when
held down which allows you to move the cursor any
distance quickly by pressing the key once. If you hold the
key down, that moves the cursor to the right, the cursor
moves off the right side of the screen and reappears one
line lower on the left side of the screen. The cursor also
wraps when moved to the left and reappears one line
higher on the right side of the screen.
Chapter 2. Learning to Operate the Display Station 37