+@node Agent and IMAP
+@subsection Agent and IMAP
+
+The Agent work with any Gnus backend, including nnimap. However, since
+there are some conceptual differences between NNTP and IMAP, this
+section (should) provide you with some information to make Gnus Agent
+work smoother as a IMAP Disconnected Mode client.
+
+The first thing to keep in mind is that all flags (read, ticked, etc)
+are kept on the IMAP server, rather than in @code{.newsrc} as is the
+case for nntp. Thus Gnus need to remember flag changes when
+disconnected, and synchronize these flags when you plug back in.
+
+Gnus keep track of flag changes when reading nnimap groups under the
+Agent by default. When you plug back in, by default Gnus will check if
+you have any changed any flags and ask if you wish to synchronize theese
+with the server. This behaviour is customizable with
+@code{gnus-agent-synchronize-flags}.
+
+@vindex gnus-agent-synchronize-flags
+If @code{gnus-agent-synchronize-flags} is @code{nil}, the Agent will
+never automatically synchronize flags. If it is @code{ask}, the
+default, the Agent will check if you made any changes and if so ask if
+you wish to synchronize these when you re-connect. If it has any other
+value, all flags will be synchronized automatically.
+
+If you do not wish to automatically synchronize flags when you
+re-connect, this can be done manually with the
+@code{gnus-agent-synchronize-flags} command that is bound to @kbd{J Y}
+in the group buffer by default.
+
+Some things are currently not implemented in the Agent that you'd might
+expect from a disconnected IMAP client, including:
+
+@itemize @bullet
+
+@item
+Copying/moving articles into nnimap groups when unplugged.
+
+@item
+Creating/deleting nnimap groups when unplugged.
+
+@end itemize
+
+Technical note: the synchronization algorithm does not work by "pushing"
+all local flags to the server, but rather incrementally update the
+server view of flags by changing only those flags that were changed by
+the user. Thus, if you set one flag on a article, quit the group and
+re-select the group and remove the flag; the flag will be set and
+removed from the server when you "synchronize". The queued flag
+operations can be found in the per-server @code{flags} file in the Agent
+directory. It's emptied when you synchronize flags.
+
+