A designation that identifies an item's relative complexity (or level) as an assembly (or component). The first indenture items are called LRU (Line Replacement Unit) and the lower indenture items are called SRU (Shop Replacement Unit).
For comparison fields, there are three values shown per field:
• (A) — The value from the first scenario selection
• (B) — The value from the compare scenario selection
• (Delta) — The difference between the two selections