Display Control
When
Format
mode
is
on,
pressing
the
lIB
key
deletes all
unprotected
displaying
and
non-
displaying
characters
(except protected video
enhancement
escape sequences) from
the
cur-
rent
cursor
position
through
the
end
of
the
workspace.
This
key
is
disabled
in
the
User
Key
and
configuration menus.
To
perform
this
function
programmatically,
use
the
following escape sequence:
Ec
J
Clear Line
When
Format
mode
is
off,
pressing
the.
key
deletes all
displaying
and
non-displaying
characters
from
the
current
cursor
position
through
the
end
of
the
current
line.
When
Format
mode
is
on
and
the
cursor
is
positioned
within
an
unprotected
field,
pressing
the.
key deletes
all
displaying
and
non-displaying
characters
(except video
enhancement
escape sequences) from
the
current
cursor
position
through
the
end
of
the
current
field.
If
the
cursor
is
not
within
an
unprotected
field,
the.
key
has
no effect.
In
the
User
Key
menu
and any
configuration
menu,
clear
line
acts
the
same
as
for unpro-
tected
and
transmit-only
fields
in
Format
mode.
To
perform
this
function
programmatically,
use
the
following escape sequence:
Ec
K
SETTING AND CLEARING MARGINS
You
can
redefine
the
left
and/or
right
margin.
These
margins
affect
the
cursor
positioning for
certain
functions (such
as
carriage
return,
home up, home down, etc.)
and
establish
opera-
tional
bounds
for
the
insert
character
and
delete
character
functions.
In
addition,
the
left
margin
is
always
an
implicit
tab
stop.
Data
to
the
left of
the
left
margin
or
to
the
right
of
the
right
margin
is
still
accessible.
Data
transfers
from
the
workspace to a
host
computer
or
to a
printer
are
performed
without
regard
to
margins.
Format
mode,
when
enabled,
also
operates
without
regard
to
margins.
When you
are
entering
data
through
the
keyboard
and
the
cursor
reaches
the
right
margin,
it
automatically
moves to
the
left
margin
in
the
next
lower
line
(note
that
this
operating
characteristic
can
be disabled
through
the
use
of
the
InhEolWrp
terminal
configuration
parameter;
refer
to Section 3). When you press1:1,
the
cursor
moves
to
the
left
margin
in
the
current
line
if
Auto
Line
Feed mode
is
disabled or to
the
left
margin
in
the
next
lower
line
if
Auto Line
Feed
mode is enabled.
When
data
is
being
received from a
host
computer,
it
enters
display
memory
only
within
the
defined
margins.
When
the
cursor
reaches
the
right
margin,
it
automatically
moves to
the
left
margin
in
the
next
lower
line
(as mentioned above,
this
operating
characteristic
can
be
disabled
through
the
use
of
the
InhEolWrp
configuration
parameter).
When
an
ASCII
<CR>
control code
is
received,
the
cursor
always moves to
the
left
margin
in
the
current
line
regardless
of
whether
or
not
Auto Line Feed mode
is
enabled.
4-19
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