diff --git a/over/app.py b/over/app.py
index 07a14f8..46cc603 100644
--- a/over/app.py
+++ b/over/app.py
@@ -754,6 +754,7 @@ class Main:
 			else:
 				method = None
 				method_display_name = "<y>%s<.>" %(method_name)
+				
 				if method_name == "<module>":
 					method_type = "module"
 				else:
diff --git a/over/callback.py b/over/callback.py
index 3f5d807..aa55678 100644
--- a/over/callback.py
+++ b/over/callback.py
@@ -3,6 +3,10 @@
 
 # --------------------------------------------------
 
+import os
+
+# --------------------------------------------------
+
 def boolean(arg):
 	"""
 	Converts
@@ -48,3 +52,29 @@ def strings(*args):
 		out.append(str(arg))
 	
 	return out
+
+def directory(exists=False, writable=False, gio=False):
+	"""
+	Returns a directory callback that raises hell if:
+	- the supplied directory doesn't exist and `exists` is True
+	- isn't writable and `writable` is True
+	- isn't a valid Gio path and `gio` is True
+	
+	@while generating a callback
+	"""
+	
+	if gio:
+		raise NotImplementedError("Gio support is not yet here")
+	
+	def cb(arg):
+		path = os.path.abspath(os.path.expanduser(arg))
+		
+		if not os.path.isdir(path) and exists:
+			raise FileNotFoundError("%s (%s) does not exist" %(arg, path))
+		
+		if writable and not os.access(path, os.W_OK | os.X_OK):
+			raise PermissionError("%s exists but is not writable" %(arg))
+		
+		return path
+	
+	return cb
diff --git a/over/template.py b/over/template.py
index b7bb9c7..6502007 100644
--- a/over/template.py
+++ b/over/template.py
@@ -4,7 +4,6 @@
 # --------------------------------------------------
 # Library imports
 import over
-prefix = over.text.prefix
 
 # --------------------------------------------------
 # Local imports
@@ -25,10 +24,9 @@ class ConfigurationError(Exception):
 # --------------------------------------------------
 
 if __name__ == "__main__":
-	main = over.app.Main("short-name", "Human Readable Name", version.str, "LICENSE", use_cfg_file=False)
-	main.add_option("option", "type", "default", "Description.", short_name="s")
-	main.add_help("Description", ["What it does.", "Another paragraph."])
-	main.enable_help("h")
-	main.parse()
+	main = over.app.Main("app-name", version.str, "LICENSE", features={"config_file": False})
+	main.add_option("option", "What the option does.", str, ["default"], count=1, abbr="o")
+	main.add_doc("Description", ["What it does.", "Another paragraph."])
+	main.setup()
 	
 	...