What is the proper value for ACM_DRIVERADDF_NAME?

[Alex Villací­s Lasso]

I am working on a set of patches for msacm, and I want to add support 
for ACM_DRIVERADDF_NAME. The problem is that Wine does not have a 
definition for this value, which is supposed to be used in 
acmDriverAdd[AW]. It does not appear in any header of MSVC either. I 
searched MSDN and Google, and it does not appear either. MSDN mentions 
its use, but does not mention its specific value. Has anybody seen the 
value for this definition, and if so, can you please forward it to me? 
Thanks in advance.

BTW, what happened to the two MSACM patches sent in December 28?

Alex Villacís Lasso