Trashcan
Goozzee automatically manages topics and occurrences which are not associated anymore with anything else – the orphans. Since such topics/occurrences don't seem to be of any use in the topic map, they are put into (i.e. Associated with) the Trashcan topic.This Trashcan is, in fact, the last step before physical suppression from the database. As long as an object is there (be it a topic or an association), you're still able to reuse it in a new association with some other topic. And as soon as it is reused somewhere, it will be automatically removed from the trashcan.
These objects stored in the trashcan can still be accessed as normal objects : documents can be opened, topics can be visited... But when you explicitly remove them from the Trashcan (i.e. you delete their association with the Trashcan), they'll be definitely erased from the database.
This Trashcan topic is also special for other reasons : most of normal operations are forbidden. You can't upload a document into the Trashcan, you can't create an association between the Trashcan and some other topic (the 'New' buttons don't even appear in the buttons areas, and dropping a topic into one of the buttons areas won't have any effect..), you can't either edit the associations from the buttons areas. All of this to make sure that the automatic management of orphan topics remains consistent.
Note that security restrictions apply to the Trashcan too : you'll only see the content that you're allowed to, unless your user has administrator rights.
About Notes: The notes you may have entered inside a topic are stored, behind the scene, as some special sort of occurrence, automatically associated to that topic, and only that topic. So, if this topic (let's call if 'Foo') happens to be in the Trashcan, and you remove it from the Trashcan, it will be physically deleted from the database, but its notes will become an orphan occurrence. These notes will then be converted into an occurrence named “note_from_Foo”, and they'll be stored in the Trashcan's documents, until you physically delete them. You will still be able to access these notes, opening them just like any other document, but be aware that they will hardly be useable at this stage: they are in xml format, the raw format used to store the notes in the database.