IAW

from The Free On-line Dictionary of Computing (8 July 2008)
IAW

   <chat> inactive window.

   Used in {talk} systems to mean that that person will not be
   taking part in the conversation for a while.  The sadly
   mispelled alternative, "unactive window" (UAW) has also been
   reported.

   (1994-12-05)
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
IAW
       In Accordance With (slang, Usenet, IRC)
antiflux / dictionary / IAW
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