gnus: Summary Generation Commands

 
 3.27.3 Summary Generation Commands
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 ‘Y g’
      Regenerate the current summary buffer (‘gnus-summary-prepare’).
 
 ‘Y c’
      Pull all cached articles (for the current group) into the summary
      buffer (‘gnus-summary-insert-cached-articles’).
 
 ‘Y d’
      Pull all dormant articles (for the current group) into the summary
      buffer (‘gnus-summary-insert-dormant-articles’).
 
 ‘Y t’
      Pull all ticked articles (for the current group) into the summary
      buffer (‘gnus-summary-insert-ticked-articles’).