diff --git a/config/xlxd.blacklist b/config/xlxd.blacklist
index e69de29..07d4bb5 100644
--- a/config/xlxd.blacklist
+++ b/config/xlxd.blacklist
@@ -0,0 +1,12 @@
+##############################################################################
+#  XLXD blacklist file
+#
+#  one line per entry
+#  each entry is explicitely denied access (blacklisted)
+#  you can use * as last wildcard character
+#  example:
+#    *     -> deny access to  eveybody !!!
+#    LX*   -> deny access to all callsign starting with LX
+#    LX3JL -> deny access to LX3JL exactly
+#
+#############################################################################
diff --git a/config/xlxd.interlink b/config/xlxd.interlink
new file mode 100644
index 0000000..fdba77c
--- /dev/null
+++ b/config/xlxd.interlink
@@ -0,0 +1,14 @@
+##############################################################################
+#  XLXD interlink file
+#
+#  one line per entry
+#  each entry specify a remote XLX to peer with
+#  format:
+#    <callsign> <ip> <list of module shared>
+#  example:
+#    XLX270 158.64.26.132 ACD
+#
+#  note: the remote XLX must list this XLX in it's interlink file
+#        for the link to be established
+#
+#############################################################################
diff --git a/config/xlxd.whitelist b/config/xlxd.whitelist
index 72e8ffc..fa1832e 100644
--- a/config/xlxd.whitelist
+++ b/config/xlxd.whitelist
@@ -1 +1,13 @@
+##############################################################################
+#  XLXD whitelist file
+#
+#  one line per entry
+#  each entry is explicitely authorised (whitelisted)
+#  you can use * as last wildcard character
+#  example:
+#    *     -> authorize eveybody
+#    LX*   -> authorize all callsign starting with LX
+#    LX3JL -> authorize LX3JL exactly
+#
+#############################################################################
 *
diff --git a/src/makefile b/src/makefile
index d2baee0..f04eff2 100644
--- a/src/makefile
+++ b/src/makefile
@@ -18,10 +18,7 @@ clean:
 
 install:
 	mkdir -p /xlxd
-	mv /xlxd/xlxd.blacklist /xlxd/xlxd.blacklist.bak
-	mv /xlxd/xlxd.whitelist /xlxd/xlxd.whitelist.bak
-	mv /xlxd/xlxd.interlink /xlxd/xlxd.interlink.bak
 	cp ./xlxd /xlxd/
-	cp ../config/xlxd.blacklist /xlxd/
-	cp ../config/xlxd.whitelist /xlxd/
-	cp ../config/xlxd.interlink /xlxd/
+	cp -i ../config/xlxd.blacklist /xlxd/
+	cp -i ../config/xlxd.whitelist /xlxd/
+	cp -i ../config/xlxd.interlink /xlxd/