Commodore 16 User Manual page 12

The
Cursor Keys
(§@R
I
v
The
cursor, the (lashing block
thai
marks where you
are
on
the
computer
screen,
can be
moved
quickly and
eas>ly
around
the
screen
by
using the CURSOR
KEYS.
There are
four separate cursor keys,
each with an arrow
pointing out the direction the
key
moves
the
cursor
up,
down,
ielt. or
right.
You
can use
the cursor
keys
lo
move
the
cursor over anything
on
the
screen without
affecting
those
characters.
Like
all
keys on
the
Commodore
1
6
keyboard,
each cursor key can
automatically
repeal.
Ttvs
means
mat
if
you
continually
hold the
key
down,
the cursor continuously moves
In the
direction of the key you're
pressing (saving you from having
to
perform
the tabled
"rapid-fire
key-
press").
INST /DEL
You can INSERT and
DELETE
letters
and numbers
from
Ihe
line
you are
typing with thts key.
When
you
press
(his
key by
itsell,
the typed
characler immediately
to the
left of the cursor disappears,
and
the
cursor moves
over
to
where
the missing characler
was You
can use
the cursor
keys
to
go
back
to
the middle of
a line
and
then use
DEL
to
erase a
letter.
When
you do
this,
the
letter to the
left is
deleted, and
the
rest of the
letters
on
Ihe
line
move
over one space
to
the
left
to close
the gap.
To o
pen
up
space
lo insert letters and numbers,
type
this key along
with
SHOT
Space opens
to
the
right
of the cursor; the cursor
tiself
does
not
move When
you
insert
space
In
the middle
of
a
line of
letters.
Ihe
rest
of the
line
moves
lo
the right
The ART/DEL
«ey saves a
lot
of
time when
you want
lo edit or
change
what
you've lyped
2C
I
'
I
f
I
'
(
I
KEY
+ EFFECT
INST/DEL
SHIFT
iKST/DEL
DELETE (ERASE
TYPED
CHARACTERS)
INSERT (ADD
SPACES)
SHIFT
CLEAR
HOME
This
key
serves
two
primary functions:
HOME
and
CLEAR. When
you
press
this
key alone, the
cursor immediately moves
to
the top
left
coiner
of the
screen (which
Is
known
as the
HOME
position).
The
resf
of your
screen stays
Ihe
same.
If
you hold
down
the
SHOT key and
press
clem/home
,
not only does
Ihe cursor
move
lo
HOME,
but
everything on
Ihe screen
is
erased
(or cleared).
All
that
remains
on
the
screen
is Ihe
blinking cursor
at
the top
left
corner
of
the screen.
KEY EFFECT
CLEAR /ROME
CLEAR-HOME
cnit
(Control)
SHIFT
HOME
POSITION
CLEAR SCREEN
SHIFT
i
-CLEAR
HOME
\
The
cm
key
is
like
the
SHOT *oy
in
that
it
always works
wiih
another
key.
You
must
hold
it
down
while you press other keys. CTBL
is
used
in
three instances.
i)
As
the
COLOUR KEYS
section explains, pressing
CTBL and
a
colour key
lels
you change
the colour of the texl
printed on
Ihe
screen.
2)
You can pause a program
thai
is
PRINTing
or
LISTing
on
Ihe
screen
by pressing
CTBl and
Ihe
S key
(To
re-slart
the
program, press any key except bun/stop
)
3)
CTBL
is
also
used with reverse
on/off and flash on/off
Tnese
are explained
later In this
section
In
addition,
some
software
programs
that
you buy
make
use
of the
CTBL key
for their
own
special functions.
21