Victor APC - 1D? DD? 4D? 6D? and/or 8D?

I recently found the Victor APC over on Arnold Snyder's website, and it is significantly easier to master and maintain at the tables for me than Uston APC (both B3 systems), and may supplant my usage of Bryce Carlson's AO2 (B2 system).

However, I have not been able to find any discussion over there, or anywhere else as to whether that counting system was designed for single deck or double deck games, or for four, six or eight deck shoe games, and whether it is more or less effective depending upon the game.

I would appreciate any guidance that can be provided, as well as how the basic strategy and index plays for VAPC should be modified depending upon the composition of the decks being played against (1D, DD, 4D, 6D or 8D).

Thanks in advance for any assistance and guidance that can be provided.