I add directory to dropbox, but I can not see it my octave. Why?
Unfortunately, I do not fully understand your issue. Can you please tell us about the operating system and Octave version you are using? As far as I understand your problem, you cannot see your Dropbox folder inside the Octave "File Browser", right? Then please tell us where your directory is located, maybe you (accidentally) chose a "fancy" setup of Dropbox, which makes your question easy to be answered.