Frames can be an effective way to keep a list of links available to users during their visit to your site. Frames have become much more common and because of this, much more user friendly. Each frame has a name and it's own html document to define it. Any links within a frame can be displayed within that frame or in another frame when refered to by name. When designing a frames page, you will code one more than the number of frames.
Target is a parm on the a href command.