The term LAX POSTING refers to a job description that involves four components: SKED (4 letters), ARR (3 letters), ETA (3 letters), and ETD (3 letters). SKED stands for 'SCHEDULE, ' ARR stands for 'ARRIVAL, ' ETA stands for 'estimated time of ARRIVAL, ' and ETD stands for 'estimated time of departure.' This job description requires someone to keep track of the SCHEDULE of arrivals and departures, as well as the estimated times of ARRIVAL and departure, at a particular location, such as an airport.