The bin is the cut list. Indeed, each time that you make a cut, this cut disappears from the sound and goes to the bin.
By doing a right click on a cut, the following menu is displayed :
Play : plays the selected cut.
Rename : renames the selected cut
Paste : pastes the selected cut on the sound, where your playhead is.
Save as a new item : saves the selected cut as a master in the Browser.
Delete : deletes the cut from the bin.