Section 3. Entry Assist Capabilities; Formatting Controls - IBM 3270 User Manual

Section 3. Entry Assist Capabilities
The DOC ON OFF key enables/disables all Entry Assist
capabilities.
2
When a display unit is first powered on, the Entry
Assist capabilities are disabled (off). Pressing the DOC ON OFF
key (alt shift) enables the Entry Assist capabilities (the display is
said to be in document mode) and causes the DOC symbol to be
displayed in the operator information area (column positions
66-68). Pressing the DOC ON OFF key while in document mode
disables the Entry Assist capabilities and clears the DOC symbol.
3.1 Formatting Controls
Keyboard controls to set and clear margins, tabs, and the audible
'end of line' signal are operational only when the display is in both
document and change format modes. Pressing the Change Format
(CRG FMT) key while in document mode places the display in
change format mode. This action causes the scale line (see Figure
2) to appear in the operator information area (bottom row on the
screen) with a scale line cursor indicating the current cursor
position. (The normal cursor in the entry area is replaced with a
reverse-image cursor.) The display user may now set, change, or
clear the margins, tabs, or 'end of line' signal position, as described
below, using the active keys indicated in Figure 3.
r
First Screen Column Last Screen Column-,
I
Left Tab End-of-Line I I
I Right
I Margin
I
I
Stop
I
Signal --,
r
Margin I
I I I I Posit ion
I I I
rV v-v v v-v \ v,
10'"
·+···-1-<··+· _ '-2-·· .+. _ • -3-· -.+ ••• -4-·· -+ ••• -5-·· -+. ··-6-*·
.>- •••
7 _ •.. + ••••
1
'I I I IJ
I Left I I I
I . I Entry I Right I
<- Margin ->< Area ><- Margin->
I Area I I Area I
Figure 2. Entry Assist Scale Line
2
When you are working with 3179 and 3180 units in native mode, the unit
must first be placed in extended-select mode.
10