Looks like this feature of WWIV will be important in a patent lawsuit by
Trend Micro. Trend Micro claims to have a valid 1995 patent for doing virus
scanning on email servers, and many of their claims appear to be well-known
capabilities that WWIV had well before 1995
For mor information on this please look at this article:
http://www.groklaw.net/article.php?story=20080125135544713
-RZ