Add a link to details about fmf inheritance
@@ -339,9 +339,11 @@ inheritance to prevent unnecessary duplication of the data::
filter: tier:2
Note that a ``+`` sign should be used if you want to extend the
-parent data instead of replacing them.
-
+parent data instead of replacing them. See the `fmf features`_
+documentation for a detailed description of the hierarchy,
+inheritance and merging attributes.
+.. _fmf features: https://fmf.readthedocs.io/en/latest/features.html
Stories
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