diff --git a/cal/cal.php b/cal/cal.php
new file mode 100644
index 00000000..302549bb
--- /dev/null
+++ b/cal/cal.php
@@ -0,0 +1,40 @@
+<?php
+/********************************************************************
+ * Name: Calendar Export
+ * Description: This addon exports the public events of your users as calendar files
+ * Version: 0.1
+ * Author: Tobias Diekershoff <https://f.diekershoff.de/profile/tobias>
+ * License: MIT
+ * ******************************************************************/
+
+
+function cal_install()
+{
+}
+function cal_uninstall()
+{
+}
+function cal_module()
+{
+}
+/*  pathes
+ *  /cal/$user/export/$format
+ */
+function cal_content()
+{
+    $a = get_app();
+    $o = "";
+    if ($a->argc == 1) {
+	$o = "<p>".t('Some text to explain what this does.')."</p>";
+    } elseif ($a->argc==4) {
+	$username = $a->argv[1];
+	$do = $a->argv[2];
+	$format = $a->argv[3];
+	$o = "<p>".$do." calendar for ".$username." as ".$format." file.</p>";
+    } else {
+	$o = "<p>".t('Wrong number of parameters')."</p>";
+    }
+    return $o;
+}
+
+?>