Apple Final Cut Pro 6 - Manual (Page 286)

Chapter 17 Capturing Your Footage to Disk 285
IV
6 Drag in the Browser to select all the markers.
7 Choose Modify > Make Subclip.
Note: If you gave your markers new names, your subclips will use them.
The subclips appear in addition to the original clip with the markers. You can rename
the subclips, if you want. You can review the subclips, deleting any clips you might not
need. If you do remove unused clips, you can use the Media Manager to remove your
unused footage from disk, leaving the media for your remaining subclips alone. For
more information, see Volume IV, Chapter 7, “Overview of the Media Manager.”
All of the material
between the markers
you selected should now
appear as subclips.