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+# Functions and usages internally recognized within the hub
+
+The hub uses a list of building functions that are the only ones recognized. All new categories should be added to the dictionaries that translate from the input formats to the hub functions and from the hub functions to the output formats.
+
+Output formats accepted:
+* Function:
+    * nrel
+    * nrcan
+    * eilat
+* Usage:
+    * nrcan
+    * comnet
+    * eilat
+
+Functions:
+* single family house
+* multi family house
+* row hose
+* mid rise apartment
+* high rise apartment
+* residential
+* small office
+* medium office
+* large office
+* primary school
+* secondary school
+* stand alone retail
+* hospital
+* out-patient health care
+* strip mall
+* supermarket
+* ware house
+* quick service restaurant
+* full service restaurant
+* small hotel
+* large hotel