How-to: Work with Clips
After dragging a clip into the sequencer, you can loop the clip by clicking and dragging the upper right corner. You can also alter the original length of the clip by clicking and dragging the lower right corner. You can set the start position of a clip by clicking and dragging the lower left corner. Here is an example of a clip that has been looped.
To delete a clip, select it and hit your backspace key. You can also duplicate clips by holding down the alt-key and clicking and dragging the clip, just as if you would move it but with the alt-key down.
You can copy, cut and paste clips from the Edit menu.