A more thorough explanation:

A change order is a request to modify a previously ordered item or service. It can also refer to a directive issued by the federal government to a contractor to alter the specifications of an item the contractor is producing for the government.

1. A homeowner hires a contractor to build a deck in their backyard. After construction has begun, the homeowner decides they want to add a built-in bench to the deck. The contractor creates a change order to reflect the additional work and cost.

2. A company is contracted by the government to produce a certain number of military vehicles. The government decides they want the vehicles to have a different type of engine. The company receives a change order to modify their production process to accommodate the new engine.

These examples illustrate how a change order can be used to modify an existing agreement or contract. It allows for flexibility and adjustments to be made during the course of a project or production process.