Hey Whack
They are notes written by pilots, for pilots. With all the destinations and places we fly, we have a few pages with every airport that describe different threats. It could be people or dogs on the runway, English is poor, or be prepared for this arrival for this runway. Especially if you have never been to a destination, or it has been six months and need a refresher. It does capture threats, and helps to become familiar with certain areas.

Southwest is a good place to be. Always wanted to go, but I enjoy this type of flying, which I never expected in my wildest dreams. Cheers.