Added rdoc comments

app/models/fixed_deliverable.rb

@@ -1,16 +1,18 @@
 class FixedDeliverable < Deliverable
   unloadable
   
-  # Fixed rate bids should always have a budget score of 0. This is because the budget is managed by the contractor.
+  # FixedDeliverables should always have a budget score of 0. This is because the budget is managed by the contractor.
   def score
     0
   end
-  
+
+  # Returns the amount spent.  It will always be related to the progress of the 
+  # FixedDeliverable because it is managed by the user
   def spent
     (self.progress.to_f / 100 ) * self.budget
   end
   
-  def profit
+  def profit # :nodoc:
     if read_attribute(:profit_percent).nil?
       return super
     else
@@ -18,6 +20,7 @@ class FixedDeliverable < Deliverable
     end
   end
   
+  # Budget for the labor, excluding overhead, profit, and materials
   def labor_budget
     return read_attribute(:fixed_cost)
   end