Display Control
From
the
keyboard, you
set
and
clear
the
margins using
the
margi
ns
/tab/col
set
offunction
keys.
To
get
to
that
set, use
the
following keystroke sequence:
lII,margins/tabs/col.
To
change
the
left or
right
margin, move
the
cursor to
the
desired column
and
press
the
appropriate function key (LEFT
MARG
11'1
or RIGHT
MARG
I
H).
To
reset
the
left
margin
to
column
1
and
the
right
margin
to column 80, press
CLR
ALL
MARGINS.
If
you
attempt
to
set
either
margin
incorrectly
with
relation
to
the
other
(e.g.,
the
right
margin
to
the
left of
the
left margin),
the
terminal
rejects
it
with
an
audible
((beep".
From
a
program
executing
in
a host computer, you
set
and
clear
the
margins
using
the
following escape sequences:
SET LEFT MARGIN: Ec 4
SET RIGHT MARGIN: Ec 5
CLEAR ALL MARGINS: Ec 9
The first two escape sequences
set
the
left
and
right
margin
(respectively)
at
the
current
cursor position. Therefore, before using them, you will first
have
to position
the
cursor
at
the
desired column
using
one of
the
cursor control escape sequences described
earlier
in
this
.~,
section. )
SETTING AND CLEARING TABS
Within
the
active workspace you
can
define a series of
tab
stops to which
you'can
move
the
cursor
using
the
tab
and
back
tab
functions (described
as
separate
topics
later
in
this
sec-
tion).
From
the
keyboard, you
set
and
clear
tab
stops using
the
margins/tabs/col
set
of function
keys.
To
get
to
that
set, use
the
following keystroke sequence:
lII,margins/tabs/col.
To
set
a
tab
stop, move
the
cursor to
the
desired column
and
then
press
the
SET
TAB
key.
To
clear a
tab
stop, move
the
cursor to
the
tab
stop
and
then
press
CLEAR
TAB.
To
clear all
existing
tab
stops, press
CLR
ALL
TABS. Note
that
the
left
margin
is always
an
implicit
tab
stop
and
is
not
affected by
the
CLR
ALL
TABS
key.
Tab stops
that
do
not
lie
within
the
area
bounded by
the
left
and
right
margins
are
ignored
when
the
tab
or
back
tab
functions
are
performed.
4-20
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