4 Blocks are used for inheritance and act as placeholders and replacements at
5 the same time. They are documented in detail in the documentation for the
6 :doc:`extends<../tags/extends>` tag.
8 Block names should consist of alphanumeric characters, and underscores. Dashes
11 .. seealso:: :doc:`block<../functions/block>`, :doc:`parent<../functions/parent>`, :doc:`use<../tags/use>`, :doc:`extends<../tags/extends>`