[Python-Dev] rst files

[Ethan Furman]

Can somebody please explain this?

.. index::
   single: formatting, string (%)
   single: interpolation, string (%)
   single: string; formatting
   single: string; interpolation
   single: printf-style formatting
   single: sprintf-style formatting
   single: % formatting
   single: % interpolation

Specifically, what does index mean?  What does single vs double vs triple mean?  Is there a reference somewhere I can read?

--
~Ethan~

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