Mention other placeholders
diff --git a/Doc/lib/libsqlite3.tex b/Doc/lib/libsqlite3.tex
index 512ae88..9545696 100644
--- a/Doc/lib/libsqlite3.tex
+++ b/Doc/lib/libsqlite3.tex
@@ -47,10 +47,11 @@
operations because doing so is insecure; it makes your program
vulnerable to an SQL injection attack.
-Instead, use SQLite's parameter substitution. Put \samp{?} as a
+Instead, use the DB-API's parameter substitution. Put \samp{?} as a
placeholder wherever you want to use a value, and then provide a tuple
of values as the second argument to the cursor's \method{execute()}
-method. For example:
+method. (Other database modules may use a different placeholder,
+such as \samp{\%s} or \samp{:1}.) For example:
\begin{verbatim}
# Never do this -- insecure!