This short addition to any program will enable the user to check
for typing errors and to correct any errors found.
After you have typed in your program listing, add the following
lines:
32500 FOR I=0
TO 5000
32510 ? CHR$(125):LIST
I
32520 IF
PEEK(84)=2 THEN NEXT I
32530 POKE
764,255
32540 IF
PEEK(764)=255 THEN 32540
32550 NEXT I
The 9999 in line 32500 should be replaced with the highest line
number of the program you wish to be checked. Start off by typing GOTO
32500 and the first line of your program will be displayed on an
otherwise clear screen. For each subsequent line, just hit the space
bar.
If a typing error is found, hit the 'BREAK' key and make the
correction in the usual way. To resume checking, type I=xxxx, where
xxxx is the number of the line just corrected.
Remember to delete lines 32500 to 32550 before saving your program
to tape or disk.
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