-symbol name counts as part of the symbol name, so the value replaces
-them both.
-
- Inside such an expression, @samp{\&} and @samp{\@var{n}} used as
-subexpressions refer respectively to the entire match as a string, and
-to a submatch as a string. @var{n} may exceed 9 here, and the value
-of @samp{\@var{n}} is @code{nil} if subexpression @var{n} did not
-match. You can also use @samp{\#&} and @samp{\#@var{n}} refer to
-those matches converted to numbers (this is valid when the match or
-submatch has the form of a number). @samp{\#} stands for the number
-of already-completed replacements.
+symbol name goes with the symbol name, so the value replaces them
+both.
+
+ Inside such an expression, you can use some special sequences.
+@samp{\&} and @samp{\@var{n}} refer here, as usual, to the entire
+match as a string, and to a submatch as a string. @var{n} may be
+multiple digits, and the value of @samp{\@var{n}} is @code{nil} if
+subexpression @var{n} did not match. You can also use @samp{\#&} and
+@samp{\#@var{n}} to refer to those matches as numbers (this is valid
+when the match or submatch has the form of a numeral). @samp{\#} here
+too stands for the number of already-completed replacements.