diff --git a/ext/dom/EXPERIMENTAL b/ext/dom/EXPERIMENTAL
new file mode 100644
index 00000000000..293159a693d
--- /dev/null
+++ b/ext/dom/EXPERIMENTAL
@@ -0,0 +1,5 @@
+this module is experimental,
+its functions may change their names 
+or move to extension all together 
+so do not rely to much on them 
+you have been warned!
diff --git a/ext/xsl/CREDITS b/ext/xsl/CREDITS
new file mode 100644
index 00000000000..2f33c8874c0
--- /dev/null
+++ b/ext/xsl/CREDITS
@@ -0,0 +1,2 @@
+XSL
+Christian Stocker, Rob Richards
diff --git a/ext/xsl/EXPERIMENTAL b/ext/xsl/EXPERIMENTAL
new file mode 100644
index 00000000000..293159a693d
--- /dev/null
+++ b/ext/xsl/EXPERIMENTAL
@@ -0,0 +1,5 @@
+this module is experimental,
+its functions may change their names 
+or move to extension all together 
+so do not rely to much on them 
+you have been warned!