- * Set a there preference $string to $value.
- * @param string $data_dir data directory
- * @param string $username user name
- * @param string $string preference name
- * @param mixed $value preference value
+ * Set the desired preference setting ($pref_name)
+ * to whatever is in $value.
+ *
+ * @param string $data_dir data directory
+ * @param string $username user name
+ * @param string $pref_name preference name
+ * @param mixed $value preference value
+ *