| http://www.w3.org/ns/prov#value | - We define backlog as the value of work-in-hand to be provided for customers as of a specific date where the following conditions are met (with the exception of engineering change orders): (i) the price of the work to be done is fixed; (ii) the scope of the work to be done is fixed, both in definition and amount; and (iii) there is an executed written contract, purchase order, agreement or other do
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