Similar Keys On Typewriter And Data Entry Keyboards - IBM 3270 Operator's Manual

Similar Keys on Typewriter and Data Entry Keyboards
I ntroductio
11
Many of the keys on the Typewriter and Data Entry keyboards have similar
locations and functions. The remainder of this chapter describes these keys.
Spacebar
On the 3278, unlike a typewriter or a keypunch, a space is considered an actual
character that occupies a position on the screen. When the Spacebar (Figure 3-18)
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 typamatic if held down.
Figure 3-18. Spacebar
Cursor Control Keys
These keys have a common function. They provide a means of positioning
the cursor without affecting any of the information already on the screen.
See Figure 3-19.
Figure 3-19. Cursor Control Keys
Chapter 3. Keyboards 3-25