- * Rather than list every definition, the configuration script substitutes
- * the definitions that it finds using 'sed'. You need a patch (971222)
- * to autoconf 2.12 to do this.
+ * Rather than list every definition, the configuration script substitutes the
+ * definitions that it finds using 'sed'. You need a patch (original date
+ * 971222) to autoconf 2.12 or 2.13 to do this.
+ *
+ * See:
+ * http://dickey.his.com/autoconf/
+ * ftp://dickey.his.com/autoconf/