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(3)
KEYBOARD
©
Screen
selector
keys
These
are
used
to
select
the screen
on
the display
connected
to the
PX-7.
SUPERIMPOSE:
The
superimposed
picture, resulting
from
the
PX-7's
pic-
ture
and
the
picture
of
the external video
source
which
has
been connected
to the video input terminal
on
the
PX-7's
rear panel,
appears
on
the display.
VIDEO:
The
picture
of the
external
video source
which
has been
connected
to the
PX-7's video
input terminal
appears
on
the display.
COMPUTER:
The
computer
picture
generated
by
the
PX-7
appears
on
the display.
(D
Upper
case indicator
This
lights
when
the
CAPS LOCK
key
is
pressed
to enter
upper-case
letters.
(3)
Screen
editing
keys
(CLS
HOME,
INS,
DEL)
These
keys
are
used
to
edit
the
letters
displayed
on
the
screen.
©
Cursor
keys
These
are used to
move
the cursor
vertically
and
horizontally.
(5)
Function
keys
When
one of
these
keys
is
pressed, the character
string
defined
by
that
key
is
entered.
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