What is the difference?

Hello. I’m new to GanttProject and trying to learn the software. Can someone please explain the difference between Projects > Open and Projects > Recent Projects? It looks like I can open .gan and xml formats with the Project > Open option, but I don’t understand what type of files you would need to open with this feature? Doesn’t it just open the same Recent Projects that you can get to by using this option? Why are there 2 ways to do the same thing? I appreciate any help you can offer. Thanks.

Recent Projects is what it says: quick access to the projects which you recently worked with.