Wondering if anyone is familiar with this part of the book. It''s in Part IV , the enhancements to the R4RMusic site, chapter 15, soft and hard enhancements. Following along it shows various methods being defined for work.rb (works model) However then it comes to a ''def open_orders''. Trying to figure out if this method is intended for work.rb or another model file. Not really clear. Seems more like an order.rb method. TIA Stuart