Most of the patterns are translations of patterns originally published in languages other than English. I have tried to be accurate, but errors do creep in.
Please note that I have mostly left the patterns in their original form. Old patterns frequently use right-leaning decreases in places where a modern day knitter would find a left-leaning decrease more appropriate. I have not always tried to "fix" this, and when I have it will be in the charted version only.