Commodore PET - SCREEN DISPLAY

Function Keys
SHIFT. The SHIFT key is pressed simultaneously with any of the other
keys to give the shifted eharaeter of that key.
Ali PET keys have different
characters for shifted and unshifted modes.
ex ce pt the SPACE and RETURN keys.
The
SPACE key generates a blank or space in either mode. The RETURN key pro-
vides a carriage return in either mode. On ail two-character keys. the lower sym-
bol
is the unshifted one and the upper symbol is the shifted one.
There are two identical SHIFT keys located on the main keyboard. one at the
lower left and one at the lower right.
SHIFT LOCK (full size keyboard only). Full size PET keyboards have a SHIFT
LOCK key located directly above the left-hand SHIFT key. Pressing the SHIFT
LOCK key until it
"clicks" into place holds SHIFT down sa that bath hands are free
ta type
in shifted mode. Ta release the SHIFT LOCK key, press and release the
SHIFT LOCK key; bath SHIFT keys return up ta their unshifted position.
RETURN. The RETURN key is the equivalent of a carriage return on a
typewriter; when depressed. it
causes the eursor to move to the beginning of
the next line
on the sereen.
When vou enter a BASIC statement. the statement line can have up ta 40
characters (one display line) or up ta 80 characters (two display lines). When vou
are first entering a statement line. vou type in the characters and terminate the
line by pressing the
RETURN key. If vou type in 40 or more characters without
pressing RETURN. the cursor automatically drops down ta the next display line,
and
Vou can continue entering up ta 80 characters. If vou continue typing onto a
third line. however, the
PET will give vou a SYNTAX ERROR as saon as vou press
RETURN.
You must depress the RETURN key in order to terminate every line of
BASIC input.
The PET uses the RETURN character as a signal that the current line
is complete and ready ta analyze. The "current" line is defined as the line on
which the cursor is located, regardless of how many lines may be displayed on
the screen.
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