Page History

...

•  Do all diagram options work? (TODO list all that are know to not work correctly)

Diagram Interaction

•  Check all directions
  
•  Check hierarchical graphs
•  Check whether ctrl+z works
•  Check adding layer only constraint
•  Check position only constraint
•  Check deleting constraint
•  Check different shift modi

OS/Browser compatibility

•  Does it run on Linux/Windows/maybe Mac?
•  Does in run in Chrome/Chromium/Chromium in Electron/Firefox/...?