ah sorry, did not read that when commenting above. so you say that there is always a implicit first specified "/" in the chain? this is cool when moving things around or pushing routes down a level so i think it makes sense. can you somehow say that more explicit? i think with saying there is an implicit / at the beginning of the chain, its more understandable.
btw, "not never" does not make sense. Lets say "Paths in the auto route configuration are always specified relative."

though when reading https://github.com/symfony-cmf/RoutingAutoBundle/pull/10 i think this section changes anyways, right? maybe we simply require each chain to have a `base:` entry at the very beginning? and that one must be absolute, to make it clear to the user what he is doing?