Finally figured out how to save Avidemux

After messing with the application for a while, I finally realize how save my editing project with avidemux, and it's actually pretty easy.  In fact, avidemux supports 3 different kinds of projects, and they seemed to created the same effect.   All you need to do is RUN the correponding project file you saved, and you will see all your setting, editing and such showing up.  I was struggled because I keep trying the OPEN project file(s) and that didn't work and kept giving me some "demux" not exist error.  So now your know it: select RUN project from menu, then select the project file, and then you go from there.