1 files changed, 2 insertions, 0 deletions
diff --git a/ipif/ipif b/ipif/ipif
index f8c5838..c6784c7 100644
--- a/ipif/ipif
+++ b/ipif/ipif
@@ -1,3 +1,5 @@
+# See /usr/share/doc/userv-ipif/service.c.txt
+#
 if ( grep calling-user-shell /etc/shells
    & glob service-user root
    )