diff --git a/plan.py b/plan.py
index 24d9afa..956c03a 100755
--- a/plan.py
+++ b/plan.py
@@ -120,17 +120,16 @@ def required_power(recipes: satisfactory.Cookbook, machines: Dict[str, int]) ->
     return total
 
 
-def main():
-    recipes = satisfactory.Cookbook('data/recipes')
+def plan(recipes: satisfactory.Cookbook, required: Dict[str, Fraction]):
+    """
+    Print the items and rates, machines and counts, and power requirements
+    need to produce the items named in the dict at the mapped rate.
 
-    # Create a list of items we want to make
-    # names = [ 'supercomputer' ]
-    names = recipes.components()
-
-    # Create an initial name:rate request for all of the target items, then
-    # create a plan for their creation.
-    remain = [{n: basic_rate(recipes[n]['recipes'][0]) for n in names}]
-    rates = required_rates(recipes, remain)
+    :param recipes:
+    :param required:
+    :return:
+    """
+    rates = required_rates(recipes, required)
 
     # Note if any particular item is (in aggregate) going to exceed the
     # highest conveyor belt capacity.
@@ -146,5 +145,19 @@ def main():
     print(math.ceil(power / 150), "fuel generators")
 
 
+def main():
+    recipes = satisfactory.Cookbook('data/recipes')
+
+    # Create a list of items we want to make
+    # names = [ 'supercomputer' ]
+    names = recipes.components()
+
+    # Create an initial name:rate request for all of the target items, then
+    # create a plan for their creation.
+    request = [{n: basic_rate(recipes[n]['recipes'][0]) for n in names}]
+
+    plan(recipes, request)
+
+
 if __name__ == '__main__':
     main()