When an \character{r} or \character{R} prefix is used in conjunction
with a \character{u} or \character{U} prefix, then the \code{\e uXXXX}
-escape sequence is processed while \emph{all other backslashes are
-left in the string}. For example, the string literal
+and \code{\e UXXXXXXXX} escape sequences are processed while
+\emph{all other backslashes are left in the string}.
+For example, the string literal
\code{ur"\e{}u0062\e n"} consists of three Unicode characters: `LATIN
SMALL LETTER B', `REVERSE SOLIDUS', and `LATIN SMALL LETTER N'.
Backslashes can be escaped with a preceding backslash; however, both