gnus: Binary Groups

 
 3.24.2 Binary Groups
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 If you spend much time in binary groups, you may grow tired of hitting
 ‘X u’, ‘n’, ‘RET’ all the time.  ‘M-x gnus-binary-mode’ is a minor mode
 for summary buffers that makes all ordinary Gnus article selection
 functions uudecode series of articles and display the result instead of
 just displaying the articles the normal way.
 
    The only way, in fact, to see the actual articles is the ‘g’ command,
 when you have turned on this mode (‘gnus-binary-show-article’).
 
    ‘gnus-binary-mode-hook’ is called in binary minor mode buffers.