Exporting the Model - MotivationalModelling/mm-local-editor GitHub Wiki
You can only export a model after it has been rendered. Empty models cannot be exported.
(1) Create and render your model.
(2) Go to the "Arrange Hierarchy / Render Model" page.

(3) Click
in the header and choose your desired format (PNG or SVG).
(4) A dialogue box will appear for you to select a save location on your local machine.
(5) The file will now be saved to the location you selected.