the geodetic operation for which we are chiefly indebted to him and of which he bore the greatest share is the most perfect and extensive which has been executed in any country

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... the geodetic operation, for which we are chiefly indebted to him, and of which he bore the greatest share, is the most perfect and extensive which has been executed in any country.
Unsure about which type of M22 file you have Do you want to know exactly what it is who created it and how to open it

Can you repeat this sentence, but add in punctuation?
Unsure about which type of M22 file you have? Do you want to know exactly what it is, who created it, and how to open it?
Then inc as follows on the next 2 rows first row from RS Inc 1 st inside 1 edge sts in each side and 1 st on each side of mid st 4 sts inc 8 sts inc in total on 2 rows 387 sts ie 193 sts on each side of mid st

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Then inc as follows on the next 2 rows (first row = from RS): Inc 1 st inside 1 edge sts in each side and 1 st on each side of mid st (= 4 sts inc = 8 sts inc in total on 2 rows) = 387 sts (i.e. 193 sts on each side of mid st).