erge directive, without retrieving data from a
      branch.

    `brz send` creates a compact data set that, when applied using brz
    merge, has the same effect as merging from the source branch.

    By default the merge directive is self-contained and can be applied to any
    branch containing submit_branch in its ancestory without needing access to
    the source branch.

    If --no-bundle is specified, then Breezy doesn't send the contents of the
    revisions, but only a structured request to merge from the
    public_location.  In that case the public_branch is needed and it must be
    up-to-date and accessible to the recipient.  The public_branch is always
    included if known, so that people can check it later.

    The submit branch defaults to the parent of the source branch, but can be
    overridden.  Both submit branch and public branch will be remembered in
    branch.conf the first time they are used for a particular branch.  The
    source branch defaults to that containing the working directory, but can
    be changed using --from.

    Both the submit branch and the public branch follow the usual behavior with
    respect to --remember: If there is no default location set, the first send
    will set it (use --no-remember to avoid setting it). After that, you can
    omit the location to use the default.  To change the default, use
    --remember. The value will only be saved if the location can be accessed.

    In order to calculate those changes, brz must analyse the submit branch.
    Therefore it is most efficient for the submit branch to be a local mirror.
    If a public location is known for the submit_branch, that location is used
    in the merge directive.

    The default behaviour is to send the merge directive by mail, unless -o is
    given, in which case it is sent to a file.

    Mail is sent using your preferred mail program.  This should be transparent
    on Windows (it uses MAPI).  On Unix, it requires the xdg-email utility.
    If the preferred client can't be found (or used), your editor will be used.

    To use a specific mail program, set the mail_client configuration option.
    Supported values for specific clients are "claws", "evolution", "kmail",
    "mail.app" (MacOS X's Mail.app), "mutt", and "thunderbird"; generic options
    are "default", "editor", "emacsclient", "mapi", and "xdg-email".  Plugins
    may also add supported clients.

    If mail is being sent, a to address is required.  This can be supplied
    either on the commandline, by setting the submit_to configuration
    option in the branch itself or the child_submit_to configuration option
    in the submit branch.

    The merge directives created by brz send may be applied using brz merge or
    brz pull by specifying a file containing a merge directive as the location.

    brz send makes extensive use of public locations to map local locations into
    URLs that can be used by other people.  See `brz help configuration` to
    set them, and use `brz info` to display them.
    r