The Edit menu in the BI Explorer allows you to manage objects in the Catalog. It contains the following items:
Cut -- Cuts selected folders or objects. You can paste them to other folders.
Copy -- Copies selected folders or objects.
Paste -- Pastes cut or copied folders or objects to the current folder. You need write access to the current folder.
Select All -- Selects all objects in the current folder.
Invert Selection -- Selects all objects that are currently not selected in the current folder, and deselects objects that are currently selected.