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7
Figure 1
.7 shows the control
keys (the stippled
keys).
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The functions of the control keys are explained below.
SHIFT
Similar
to
the shift key of an
ordinary typewriter; when this key is
depressed, the character
keys
and some control
keys
are shifted.
Carriage
return key. The
ENT|
key has
the same function as the
[ CR
key.
GRPH
If this key
is pressed
in
the normal
mode,
the graphic mode is entered and the
cursor
pattern
changes from
" fif "
to
"
*ÿ
", and vice
versa.
INST
DEL
DEL erases
the character at the left of
the cursor
location,
shifting all following characters
of the
string to
the left one space. INST inserts a space where the cursor
is
located by shifting all following
characters of the
string to
the
right
one
space.
:
HOME
returns
the
cursor
to the
upper left hand comer of the display screen. CLR clears the display
screen
and also returns the
cursor
to the
screen's upper left
hand
comer.
In the
graphic
mode,
HOME
produces the
reverse character
"
H
",
and CLR produces the
reverse
character "
H
",
t
o*so»
T
Cursor control
keys.
Each
key
moves
the
cursor
in
the direction indicated by the arrow
(normal
position and shift
position).
In the graphic
mode,
each key produces the
reverse
arrow;
DDES.
When this key
is
pressed with the SHIFT key depressed, a break code
is
generated,
and halts
execution of
BASIC programs.
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