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Commodore Plus 4 - Page 118

Commodore Plus 4
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106
The
Built-in
Software
When
you
are
in
half-screen
mode,
you
can
still
view
any
segment
of
the
whole
work
areas
of
either
program.
Just
use
the
cursor
keys
and
other
cursor-
movement
keys
to
display
other
parts
of
the
work
area
on
the
half
screen.
IB
WP
Lets
you
insert
a
text
block
anywhere
in
the
work
area.
To
use
the
IB
(Insert
Block)
command,
you must
first
use
the
CB
(Create
Block)
command
to
set
the
limits
of
the
block.
Follow
these
steps:
1.
Move
the
cursor
to
the
last
line
of
the
block.
2.
Use
the
SP
(Set
Pointer)
command
to
set
the
end
of
the block.
3.
Move
the
cursor
to
the
first
line
of
the
block.
4.
Issue
the
CB
command
to
create
the
block.
5.
Move
the
cursor
to
the
line
where
you
want
to
insert
the block.
6.
Issue
the
IB
command
to
insert
the
block.
While
the
block
is
being
moved,
the
message
WORKING
is
displayed
on
the
status
line
at
the
bottom
of
the
screen.
When
the
block
is
inserted
in
the
new
location,
the
block
also
remains
intact
in
its
original
location.
Use
the
DB
(Delete
Block)
command
to
erase
the
original
block
unless
you
want
the
block
to
appear
in
both
places.
You
can
insert
the
block
repeatedly
when
you
want
it
to
appear
in
several
places.
Just
move
the
cursor
to
the
next
location
and
issue
the
IB
command.
ID
WP,
SS
Initializes
the
current
disk.
Before
you
use
the
ID
(Initialize
Disk)
command,
make
sure
the
drive
is
on
and
the
disk
is
inserted.
You
can
initialize
the
disk
at
any
time.
Your
current
work
is
not
affected,
nor
are
any
files
on
the
disk.
Whenever
you
change
disks,
you
should
issue
the
ID
command
after
you
insert
the
second
disk
so
it
is
initialized.
IL
WP
Lets
you
insert
a
blank
line
between
lines
of
text
anywhere
in
the
work
area.
The
new
line
is
inserted
above
the
line
where
the
cursor
is
currently
located.
The
lines
beneath
are
not
affected;
they
are
moved
down
one
line
to
make
room
for
the
new
line.
To
insert
a
line,
move
the
cursor
to
the
line
where
you want
the
blank
line
added
and
then
issue
the
IL
(Insert
Line)
command.
You
can
insert
more
than
one

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