POP yog lub npe ntawm qhov point ntawm kev yuav khoom. Nws yog cov khoom siv dav tshaj, kev lag luam thiab saj dab tsi. Nws muaj txoj haujlwm tseem ceeb hauv kev lagluam.
POP muaj cov khoom ntiag tug, khoom txawb, cov khoom xa khoom, lub thawv rau lub thawv, cov cim duab tshwj xeeb, thiab lwm yam kev nthuav qhia yog cov nplua nuj thiab ntau yam, thiab lawv tau ua tiav cov ntaub ntawv ntawm qhov chaw sib tham.
