Traditionally, (and in Paper F2), if production goes through several processes we do costings for each process and value the work-in-progress at each stage. With backflush accounting, we assume they are keeping minimum inventories and do not account for each process separately (and value any work-in-progress simply at the cost of materials). However, backflush is being taken out of the syllabus next year and it is therefore very unlikely indeed to be examined this time.