Audio commentary. An audio commentary is an additional audio track, usually digital, consisting of a lecture or comments by one or more speakers, that plays in real time with a video. Commentaries can be serious or entertaining in nature, and can add information which otherwise would not be disclosed to audience members.
absorption costing. a method of inventory costing in which all variable manufacturing costs and all fixed manufacturing costs are included as inventoriable costs.
In economics, total cost is made up of variable costs + fixed costs. Variable costs (VC) are costs that change based on how many goods you produce or how much of a service you use. Fixed costs (FC) are costs that don't change from month to month and don't vary based on activities or the number of goods used.