.ft tag in man

From: bill lam <cbill.lam@gmail.com>
Date: Jan 14, 2009, 05:21 UTC
Message-ID: <20090114052126.GA6849@b2j>

The diagram in man contain some .ft tag, eg inside PAGE=less git help rebase it contains

           .ft C
                     A---B---C topic
                    /
               D---E---F---G master
           .ft

Is that intended or just an artefact?

-- 
regards,
====================================================
GPG key 1024D/4434BAB3 2008-08-24
gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
唐詩244 柳宗元  江雪
    千山鳥飛絕  萬徑人蹤滅  孤舟簑笠翁  獨釣寒江雪