from Skip Montanaro. There is one weirdness in the final index for HTML, but
that is low priority.
\subsubsection{String Formatting Operations \label{typesseq-strings}}
-\index{formatting, string}
+\index{formatting, string (\%{})}
\index{string!formatting}
\index{printf-style formatting}
\index{sprintf-style formatting}
+\index{\protect\%{} formatting}
String and Unicode objects have one unique built-in operation: the
\code{\%} operator (modulo). Given \code{\var{format} \%