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3.8 USING TABS.
The Model 950 uses two types of tabs: typewriter tabs
that move the cursor anywhere tabs are set and field tabs
that move the cursor across protected fields.
3.8.1 Typewriter Tabs
Typewriter tabs may be set anywhere on the Model 9SO
page. When the page is set for normal video (PROT off),
the tabs act like typewriter tabs, advancing the cursor to
the next tab position. Each time TAB is pressed the cur-
sor advances to the next tab; each time BACK TAB is
pressed, the cursor backs to the previous tab.
If
the cur-
sor is beyond the last tab set on a line, pressing TAB has
no effect. When the cursor is at the first tab on a line,
pressing BACK TAB moves it to the first column of the
line.
3.8.2 Field Tabs
Tabs may be set protected (PROT on) to act on a field
basis. The cursor will not move to previously set type-
writer tab columns. Pressing TAB moves the cursor to
the first unprotected character position following the
next protected field.
If
Auto page is off (refer to para-
graph 3.15.10) and no unprotected character follows, the
cursor moves to the first unprotected character on the
same page.
If
Auto Page is on and there is no following
unprotected character, the cursor moves to the first un-
protected character of the next page.
If
the next page
contains no protected fields, the cursor moves to the
Home position (line 1, column 1) on that page.
3.8.3 Tab Operations
To move the cursor forward to a tab position, press TAB
(CTRL I); to move the cursor back to a preVIOUS posi-
tion, press BA CK TAB (ESC I).
To set or clear the tabs, enter the code for the desired
operation. Type the code in the exact sequence shown
below (do not enter spaces between characters; spaces
are for clarity only):
OPERATION
Tab set
Clear tab at cursor
Clear all tabs
3.9 OTHER MODE CONTROLS
CODE
ESC 1
ESC 2
ESC 3
During normal operation of the Model 950, several func-
tio,ns may be controlled with code sequences. These
functions include keycIick, Conversation/Block mode
changes, and reverse video. To change these functions,
type their codes in the exact sequence shown below (do
not enter spaces between characters; spaces are for clari-
tyonly):
3-14
Normal video
(white on black)
Reverse video
(black on white)
Keyclick on
Keyclick off
Conversation mode on
Block mode on
Set Half duplex (HDX)
Set Full duplex (FDX)
ESCd
ESCb
ESC
<
ESC>
ESCC
ESCB
ESCDH
ESCDF
3.10 TEXT/DATA CONTROL MODES.
For normal operation, the Model 950 provides several
methods for controlling text or data entry. These meth-
ods are Edit modes for changing text, Insert modes for
modifying text, Print mode for sending text to the ter-
minal printer port, Send mode for transmitting selected
data to the host, and function key message transmissions
for sending preprogrammed messages to the host. Each
of these modes is described in the following paragraphs.
3.10.1 Editing Text
Edit mode (Insert mode off) is the most common operat-
ing mode for entering text on the screen. The Edit Page
(EDTP) mode or Edit Line (EDTL) mode, which should
be set by the application program, allows text to be edit-
ed or added after initial text entry. Any text entered re-
places characters already on the screen.
NOTE
When entering text, the wraparound fea-
ture of the Model 950 eliminates the need
to press RETURN and LINEFEED at the
end of a line.
It
automatically advances
the cursor to column 1 of the next line
when entered characters reach column 80.
A CR and an LF need only be entered
when the end of a line is before the last col-
umn.
If
double-spaced lines are desired,
LINEFEED must be pressed twice.
After the initial setup, Edit modes may be changed with-
out re,-entering the setup mode. To enter an Edit mode,
type its code in the exact sequence shown below (do not
enter spaces between characters; spaces are for clarity
only):
EDIT MODE
Local Edit
Duplex Edit
Set Page Edit
Clear Page Edit
CODE
ESCk
ESC 1
ESCN
ESC 0
These modes operate in addition to the dedicated editing
keys (refer to paragraph 3.3.2).
3.10.2 Inserting Text
The Insert mode allows text to be inserted on a line basis
or a page basis into text previously entered. Additions
are entered by setting the cursor at the insertion point
and typing in the text. Existing text shifts to the right as
the new text is entered. Insert mode is entered or cleared
either by going to the Setup mode (paragraph 3.4) or by
typing one of the following control sequences (do not
type the spaces in the sequence; spaces are for clarity
only):
OPERATION
Set insert
Clear insert
CODE
ESCq
ESCr
When the terminal is operated in the Insert Line and Edit
Line modes, any character typed causes the cursor and
all data to the right of the cursor (within the line or field)
to move one column to the right. The character ,typed
(inserted) is displayed in the cursor position before the
insert; the last character in the line or field will be lost.
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