diff --git a/environ.py b/environ.py
new file mode 100644
index 0000000..ce636f0
--- /dev/null
+++ b/environ.py
@@ -0,0 +1,14 @@
+# https://github.com/kolypto/j2cli#customization
+
+# http://jinja.pocoo.org/docs/2.10/api/#jinja2.Environment
+def j2_environment_params(): return dict(
+    autoescape            = True,
+    trim_blocks           = True,
+    lstrip_blocks         = True,
+    keep_trailing_newline = True,
+    extensions            = ("jinja2.ext.do", "jinja2.ext.loopcontrols"),
+)
+
+def j2_environment(env): return (env.globals.update(
+    my_function = lambda v: 'my function says "{}"'.format(v),
+), env)[1]
diff --git a/filters.py b/filters.py
new file mode 100644
index 0000000..687ca86
--- /dev/null
+++ b/filters.py
@@ -0,0 +1,6 @@
+#from jinja2 import Markup
+import json
+
+def to_json(obj):
+    #return Markup(json.dumps(obj))
+    return json.dumps(obj)