504834 (9) [Avatar] Offline
#1
Hello,
I had never see a "Unit 0, Lesson 0 " in a book, but I guess it depends on the Country.
Regards.
TheWexler (54) [Avatar] Offline
#2
smilie We use Unit 0 because it's a programming book and the first item in the list is the 0th item. Thanks for the comment!