Sometimes a travel itinerary includes a visa category that you have never dealt with before, so taking time to understand the terminology can prevent confusion later. Travelers researching entry into the DRC may come across DRC Ordinary Flying Visa (https://congo-evisa.com/drc-ordinary-flying-evisa/) while figuring out which information applies to their journey. I'd read through the details with the planned route and dates nearby rather than trying to interpret the category in isolation. Having the flight information available can make the research more straightforward. Once you have a better idea of where your trip fits, you can organize the remaining documents and avoid making a###umptions based on experiences from completely different types of travel.