Inclusions tell the general contractor what your number buys. They work with exclusions to define your scope.
Example: a gym equipment proposal includes six ceiling-suspended basketball backstops with electric winches. It also includes wall pads on two walls, delivery and installation.
List inclusions by spec section number and by item, with quantities for the main items. Quantities let the estimator check your count against another bidder's count. Name the addenda you included. A proposal that says only per plans and specs gives the estimator nothing to compare.