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(gnus)Hooking New Back Ends Into Gnus

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Hooking New Back Ends Into Gnus
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   Having Gnus start using your new back end is rather easy--you just
declare it with the `gnus-declare-backend' functions.  This will enter
the back end into the `gnus-valid-select-methods' variable.

   `gnus-declare-backend' takes two parameters--the back end name and
an arbitrary number of "abilities".

   Here's an example:

     (gnus-declare-backend "nnchoke" 'mail 'respool 'address)

   The abilities can be:

`mail'
     This is a mailish back end--followups should (probably) go via
     mail.

`post'
     This is a newsish back end--followups should (probably) go via
     news.

`post-mail'
     This back end supports both mail and news.

`none'
     This is neither a post nor mail back end--it's something completely
     different.

`respool'
     It supports respooling--or rather, it is able to modify its source
     articles and groups.

`address'
     The name of the server should be in the virtual server name.  This
     is true for almost all back ends.

`prompt-address'
     The user should be prompted for an address when doing commands like
     `B' in the group buffer.  This is true for back ends like `nntp',
     but not `nnmbox', for instance.