elm_transit.c: better documentation
elm_transit.c: better documentation

Author: Helen Fornazier <helen.fornazier@profusion.mobi>

SVN revision: 54420

rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary