doc/refintro.tex, src/sod-module.5: Fix slightly garbled text.

[sod] / doc / refintro.tex

diff --git a/doc/refintro.tex b/doc/refintro.tex
index ead5ace..2d4dbed 100644 (file)
--- a/doc/refintro.tex
+++ b/doc/refintro.tex
@@ -95,8 +95,8 @@ Anywhere a simple nonterminal name $x$ may appear in the grammar, an
 left-hand side of a production rule, the indices $a_1$, \ldots, $a_n$ are
 variables which vary over all nonterminal and terminal symbols, and the
 variables may also appear on the right-hand side in place of a nonterminal.
-Such a rule stands for a family of rules, in each variable is replaced by
-each possible simple nonterminal or terminal symbol.
+Such a rule stands for a family of rules, in which each variable is replaced
+by each possible simple nonterminal or terminal symbol.
 
 The letter $\epsilon$ denotes the empty nonterminal
 \begin{quote}