This .mulle folder is used by mulle-sde to store project information.

• etc is user editable, changes will be preserved.
• share is read only, changes will be lost on the next upgrade.
• var is ephemeral. You can delete and it will get recreated.

Every mulle-sde tool may have its own subfolder within those three folders. It's name will be the name of the tool without the "mulle-" prefix.

You can edit the files in etc with any editor, but for consistency and ease of use, it's usually better to use the appropriate mulle-sde tool.

The share folder is often write protected, to prevent accidental user edits.

chmod -R ugo+rwX .mulle && rm -rf .mulle