To enable displaying picons, simply put the following line in your `~/.gnus' file and start Gnus.
(setq gnus-use-picons t) (setq gnus-treat-display-picons t)
and make sure gnus-picons-database
points to the directory
containing the Picons databases.
Alternatively if you want to use the web piconsearch engine add this:
(setq gnus-picons-piconsearch-url "http://www.cs.indiana.edu:800/piconsearch")
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