diff --git a/isonline b/isonline
index a868b42..e1c77bb 100755
--- a/isonline
+++ b/isonline
@@ -1,4 +1,25 @@
 #!/bin/sh
+# 
+# 2004      Nico Schottelius (nico-nsbin at schottelius.org)
+# 
+# This file is part of nsbin.
+#
+# nsbin is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# nsbin is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with nsbin. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+# Check, whether host is reachable
+#
 
 if [ $# -lt 1 ]; then
    echo "`basename $0`"' host(s)'