SOUP Commands
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`G s b'
     Pack all unread articles in the current group
     (`gnus-group-brew-soup').  This command understands the
     process/prefix convention.

`G s w'
     Save all data files (`gnus-soup-save-areas').

`G s s'
     Send all replies from the replies packet
     (`gnus-soup-send-replies').

`G s p'
     Pack all files into a SOUP packet (`gnus-soup-pack-packet').

`G s r'
     Pack all replies into a replies packet (`nnsoup-pack-replies').

`O s'
     This summary-mode command adds the current article to a SOUP packet
     (`gnus-soup-add-article').  It understands the process/prefix
     convention.

   There are a few variables to customize where Gnus will put all these
thingies:

`gnus-soup-directory'
     Directory where Gnus will save intermediate files while composing
     SOUP packets.  The default is `~/SoupBrew/'.

`gnus-soup-replies-directory'
     This is what Gnus will use as a temporary directory while sending
     our reply packets.  The default is `~/SoupBrew/SoupReplies/'.

`gnus-soup-prefix-file'
     Name of the file where Gnus stores the last used prefix.  The
     default is `gnus-prefix'.

`gnus-soup-packer'
     A format string command for packing a SOUP packet.  The default is
     `tar cf - %s | gzip > $HOME/Soupout%d.tgz'.

`gnus-soup-unpacker'
     Format string command for unpacking a SOUP packet.  The default is
     `gunzip -c %s | tar xvf -'.

`gnus-soup-packet-directory'
     Where Gnus will look for reply packets.  The default is `~/'.

`gnus-soup-packet-regexp'
     Regular expression matching SOUP reply packets in
     `gnus-soup-packet-directory'.