In a chassis, the path along which air from a cool air source is conducted, past equipment to cool it, and then out of the rack. typically, air moves form front to back. clutter in the rack should be minimized to prevent airflow blockages.

AIRFLOW

Explanation:Chassis is the part of a physical structure which helps to carry its load and gives some support to the physical structure or equipment. Vehicles generally have chassis,most are numbered, it numbering is to ensure easy identification. The AIRFLOW helps to guarantee efficiency by controlling the movement of air into the working parts of equipment which could be the ENGINE or in a GENERATOR . Airflow system has also been adopted in cooling equipments like REFRIGERATOR or an AIR-CONDITIONING. Typically,air moves from Front to back.

a macro is a tool that allows you to automate tasks and add functionality to your forms, reports, and controls. for example, if you add a command button to a form, you associate the button's onclick event to a macro, and the macro contains the commands that you want the button to perform each time it is clicked.