Really Various Summary Commands
-------------------------------

`A D'
     If the current article is a collection of other articles (for
     instance, a digest), you might use this command to enter a group
     based on the that article (`gnus-summary-enter-digest-group').
     Gnus will try to guess what article type is currently displayed
     unless you give a prefix to this command, which forces a "digest"
     interpretation.  Basically, whenever you see a message that is a
     collection of other messages on some format, you `A D' and read
     these messages in a more convenient fashion.

`C-t'
     Toggle truncation of summary lines
     (`gnus-summary-toggle-truncation').

`='
     Expand the summary buffer window (`gnus-summary-expand-window').
     If given a prefix, force an `article' window configuration.