Address Catalogue
The address catalogue gives either the list of all elements in alphabetical order accordingly the keys or present or a hierarchical presentation.
Any number of hierarchical structure can be made over the collection. To get the list of existing hierarchies, just type a `return' in the second tool bar field. On may also directly type in the name of such a structure. On the same tollbar, the editor button popup a tool which allows to create et modify such a structure.
To switch between linear et hierarchical view, just press the mode button on the second tollbar.