In refernce to incrementing the variable in a repeat loop to process every third line, 
why not just
have the following?

repeat with n=1 to somenum
if n mod(3) <> 0 then next repeat
do whatever
end repeat

the first or second lines can become the target by using 'if n+2 mod (3) <> 0' etc.   
This seems
more simple than adding an integer to the loop variable and has completely predictable 
results.


Steve Kramer
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