I might be missing something but it seems to only be able to edit and work with existing mmd and svg files?

If I do "touch flow.mmd" then run oxdraw to edit the file, it doesn't give me an option to initialize it as a new diagram.

hi this true! i personally typically write my diagram or add nodes in a text editor prior to customizing but I do realize that many would prefer to be able to do everything in the gui so I will start adding features to add nodes and initialize the diagram in the gui!