Add clarification to default limits documentation

doc/source/configuration.rst

@@ -48,7 +48,8 @@ take priority.
        Constructor argument: :paramref:`~flask_limiter.Limiter.default_limits`
 
      - A comma (or some other delimiter) separated string that will be used to
-       apply a default limit on all routes. If not provided, the default limits can be
+       apply a default limit on all routes that are otherwise not decorated with
+       an explicit rate limit. If not provided, the default limits can be
        passed to the :class:`~flask_limiter.Limiter` constructor as well (the values passed to the
        constructor take precedence over those in the config).
        :ref:`ratelimit-string` for details.

flask_limiter/extension.py

@@ -70,8 +70,8 @@ class Limiter:
       by.
     :param app: :class:`flask.Flask` instance to initialize the extension with.
     :param default_limits: a variable list of strings or callables
-     returning strings denoting default limits to apply to all routes.
-     :ref:`ratelimit-string` for  more details.
+     returning strings denoting default limits to apply to all routes that are
+     not explicitely decorated with a limit. :ref:`ratelimit-string` for  more details.
     :param default_limits_per_method: whether default limits are applied
      per method, per route or as a combination of all method per route.
     :param default_limits_exempt_when: a function that should return