Commodore Plus 4 - Correcting typing mistakes

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10PRINT"PLUS14>
Same line 10 as last
time. PRINT tells your
Plus/4 to display
everything between
the quotes.
This command tells
the computer to
change the color
of the screen.
20 COLOR 0,12
RUN
This time there's no GOTO loop in the program, so your orders are
carried out just once.
CORRECTING
TYPING
MISTAKES
If you make a mistake when you're typing, there are several ways to
make changes.
1. YOU CAN RETYPE A LINE anytime, even after you've RUN the
program. The Plus/4 automatically replaces the old line with the
new one when you press RETURN to enter the new line.
The old line still appears on the screen, but the Plus/4 ignores it.
When you have two statements with the same line number, your
Plus/4 uses only the last one entered. For example, in a brief
program using the COLOR command to change the color of the
screen background, a mistake might occur
mistake
10COKOR0.3
20 PRINT "PLUS/4"
Press the return key to get to a fresh line, and just retype line
10 correctly:
10 COLOR 0,3 RETURN
Now the first line 10 is replaced by !he second line 10. You can
check this by typing LIST, which displays a line-by-line LISTing of
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