Feature: Export/import from file
Allow users to export the current disk usage tree to a file so that it can be shared and/or loaded, possibly in another device. This feature would allow users to share the directory tree with disk usage information.
After import from file operation, the application should operate in a view-only mode, disabling operations such as Move to Trash and Reload. This is because there may not be a correspondence between the loaded data and the actual file system at run time.
ncdu for instance does a similar thing with -o/-f. See https://dev.yorhel.nl/ncdu/man