Commodore PET - ELEMENTARY TROUBLESHOOTING

CURSOR RIGHT, obtained by pressing this key in unshifted mode, moves
the cursor right one character position within the same row.
As with CURSOR
LEFT. CURSOR RIGHT wraps the cursor around the screen. But CURSOR RIGHT
moves the cursor to the beginning of the next line down when the cursor is at the
extreme right-hand end of a line.
When the cursor reaches the end of the bottom-
most row
on the screen. the screen scrolls up one line so that the cursor appears
at the beginning of the
next blank line. Scrolling continues indefinitely until ail
text
has scrolled off the top of the screen; then the cursor appears to move to the
right circularly along the bottom row of the screen.
Blank lines scrolled onto screen
when cursor moves off bottom right
You use CURSOR LEFT/RIGHT to type over text while editing it. This is
equivalent to backspacing and striking over on a typewriter: but PET strikeover
replaces the previous character, rather than trying to
blot it out. Suppose vou
have typed:
~~m'J 18 TEE T HF!*
and vou want to change the first E in TEE to an H. Press CURSOR LEFT until the
cursor
is on the letter to be corrected:
t·~m~ 1:'=; TEE T l ~~
Hm.J 1:; TEE 'TmN
HŒoJ 18 TEE ~H~l
t·ml·J l 8 TEE!~n l N
t·jOl'J 1:3 TE!~~ T1t'1
tKll·J 1:3 n~E T Hl
Now press H:
HOH 18 THm T1t'l
The letter H appears where the first E stood. and the cursor moves to the next
character position.
Now press CURSOR RIGHT (NOT the space barn to get back to
where vou were.
29