diff --git a/Ansible/plugin_devel.md b/Ansible/plugin_devel.md
new file mode 100644
index 0000000..5184c0d
--- /dev/null
+++ b/Ansible/plugin_devel.md
@@ -0,0 +1,23 @@
+# Plugin development
+
+## Filter example
+
+```
+from __future__ import (absolute_import, division, print_function)
+
+# Some more imports
+
+__metaclass__ = type
+
+
+def myfilter(myinput):
+    return myinput + 1
+
+
+class FilterModule(object):
+
+    def filters(self):
+        return {
+            'myfilter': myfilter,
+        }
+```
\ No newline at end of file