Copies the selected item to the clipboard.
Pastes the copied item.
Use this option to delete active items. Files located on the hard drive will be deleted, as will catalog entries within a catalog itself but original files located on the hard drive will not be deleted.
Selects all items in an open directory.
Deselects all items.
Inverts the selection. Selected items will be deselected and items not selected will be selected.
See Preferences ….
This option compresses internal databases and other elements. Normally, though, databases will be compressed automatically once an internal limit is exceeded. You can also compress databases before they exceed this limit.