diff --git a/preprocessor.py b/preprocessor.py
index 9151c504655e5b1e2974331964f37f4c808761ff..57c9c8a3525c624b7c3994385c4db9d5c40e1a31 100644
--- a/preprocessor.py
+++ b/preprocessor.py
@@ -3,9 +3,11 @@ import json
 with open('recipes/vegancupcakes.json', 'r') as f:
     recipes = json.load(f)
     
-# Add a space before and after every unit if there isn't one already
+# Add a space before and after the character if there isn't one already
+# all ubits
+# - 
 # For example, converts "10g" to "10 g"
-def separateUnits():
+def surround():
     # parse JSON for each Unit in Ingredients
     for ingredient in recipes['Ingredients']:
         # unit is any value of key Unit or Alternative in units.json
@@ -26,8 +28,8 @@ def disambiguateUnits():
 # Use heuristics such as "bake" refers to temperatures within the baking range (say 160 to 250)
 # Defaults to manual intervention unless confidence is very high
 def addMissingUnits():
-    
-# Replace certain characters with space to ease tokenization
-# Characters to be replaced by " "
-# "-"
-def separateTokens():
\ No newline at end of file
+    pass
+
+# Check that everything in the database conforms to the schema
+def conform():
+    pass
\ No newline at end of file