Age of Wanda
AoW stands for "Age of Wanda".
Since the number of turns between Wanda's birth and the TBFGK and LIAB is unknown, it is not possible to use the AW turn numbering system. The turn numbering for the Descriptive Table of Contents for IPTSF is relative to the turn Wanda popped. This is the first turn in the book.
It might be possible at a later stage to determine the offset between the 2 systems.